Paradyne COMSPHERE 3610, COMSPHEREu0001 3611, COMSPHERE\u0001 3600 User Manual

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Page 1

COMSPHERE

3600 SERIES

DATA SERVICE UNITS

MODELS 3610 AND 3611

USER’S GUIDE

Document No. 3610-A2-GB46-60

December 1996

NOTE

This document supports Firmware version 8.0 or greater. Refer to Appendix G for Firmware Version Control Information.

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COMSPHERE 3600 Series Data Service Units

COMSPHERE 3600 Series Data Service Units Models 3610 and 3611

User’s Guide 3610-A2-GB46-60

7th Edition (December 1996)

Changes and enhancements to the product and to the information herein will be documented and issued as a new release.

United States

FCC Registration number: AW292J-61661-DD-N PSTN Ringer Equivalence number (REN) V.32 DBM option 0.7B

Canada

V.32 Dial Backup Module Certification number: 230 3684 A DOC Load number: 7 2-Wire Switched 56 DBM Certification number: 230 5870 A DOC Load number: 0 ISDN Dial Backup Module Certification number: 230 6943 A DOC Load number: 0

Warranty, Sales, and Service Information

Contact your sales or service representative directly for any help needed. For additional information concerning warranty, sales, service, repair, installation, documentation, or training, use one of the following methods:

• Via the Internet: Visit the Paradyne World Wide Web site at http://www.paradyne.com

• Via Telephone: Call our automated call system to receive current information via fax or to speak with a company representative.

— Within the U.S.A., call 1-800-870-2221 — International, call 727-530-2340

Trademarks

All products and services mentioned herein are the trademarks, service marks, registered trademarks or registered service marks of their respective owners.

Printed on recycled paper

This publication is protected by federal copyright law. No part of this publication may be copied or distributed, transmitted, transcribed, stored in a retrieval system, or translated into any human or computer language in any form or by any means, electronic, mechanical, magnetic, manual or otherwise, or disclosed to third parties without the express written permission of Paradyne Corporation, 8545 126th Avenue North, P.O. Box 2826, Largo, Florida 33779-2826.

Paradyne Corporation makes no representation or warranties with respect to the contents hereof and specifically disclaims any implied warranties of merchantability or fitness for a particular purpose. Further, Paradyne Corporation reserves the right to revise this publication and to make changes from time to time in the contents hereof without obligation of Paradyne Corporation to notify any person of such revision or changes.

A December 1996 3610-A2-GB46-60

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Important Safety Instructions

1. Read and follow all warning notices and instructions marked on the product or included in the manual.

2. This product is intended to be used with a three-wire grounding type plug – a plug which has a grounding pin. This is a safety feature. Equipment grounding is vital to ensure safe operation. Do not defeat the purpose of the grounding type plug by modifying the plug or using an adapter.

Prior to installation, use an outlet tester or a voltmeter to check the ac receptacle for the presence of earth ground. If the receptacle is not properly grounded, the installation must not continue until a qualified electrician has corrected the problem.

If a three-wire grounding type power source is not available, consult a qualified electrician to determine another method of grounding the equipment.

3. Slots and openings in the cabinet are provided for ventilation. To ensure reliable operation of the product and to protect it from overheating, these slots and openings must not be blocked or covered.

4. Do not allow anything to rest on the power cord and do not locate the product where persons will walk on the power cord.

5. Do not attempt to service this product yourself, as opening or removing covers may expose you to dangerous high voltage points or other risks. Refer all servicing to qualified service personnel.

Safety Instructions

6. General purpose cables are provided with this product. Special cables, which may be required by the regulatory inspection authority for the installation site, are the responsibility of the customer.

7. When installed in the final configuration, the product must comply with the applicable Safety Standards and regulatory requirements of the country in which it is installed. If necessary, consult with the appropriate regulatory agencies and inspection authorities to ensure compliance.

8. A rare phenomenon can create a voltage potential between the earth grounds of two or more buildings. If products installed in separate buildings are interconnected, the voltage potential may cause a hazardous condition. Consult a qualified electrical consultant to determine whether or not this phenomenon exists and, if necessary, implement corrective action prior to interconnecting the products.

9. In addition, if the equipment is to be used with telecommunications circuits, take the following precautions:

— Never install telephone wiring during a lightning storm. — Never install telephone jacks in wet locations unless the jack is specifically designed for wet

locations.

— Never touch uninsulated telephone wires or terminals unless the telephone line has been

disconnected at the network interface. — Use caution when installing or modifying telephone lines. — Avoid using a telephone (other than a cordless type) during an electrical storm. There may be a

remote risk of electric shock from lightning. — Do not use the telephone to report a gas leak in the vicinity of the leak.

B3610-A2-GB46-60 December 1996

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COMSPHERE 3600 Series Data Service Units

Notices

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

Government Requirements

Certain governments require that instructions pertaining to connection to the telephone network be included in the installation and operation manual. Specific instructions are listed in the following sections.

United States

Notice to Users of the Telephone Network

This equipment complies with Part 68 of the FCC rules. On the bottom of the equipment is a label or silk-screened text that contains, among other information, the FCC registration number and Ringer Equivalence Number (REN) for this equipment. If requested, please provide this information to your telephone company.

The REN is useful to determine the quantity of devices you may connect to your telephone line and still have all of those devices ring when your number is called. In most areas, the sum of the RENs of all devices should not exceed 5. Call your local telephone company to ascertain the maximum REN for your calling area.

If your Model 3610 or 361 company may discontinue your service temporarily. If possible, they will notify you in advance. But if advance notice is not practical, you will be notified as soon as possible. You will be advised of your right to file a complaint with the FCC.

Your telephone company may make changes in facilities, equipment, operations, or procedures that could affect the proper operation of your equipment. If so, you will be given advance notice so as to give you an opportunity to maintain uninterrupted service.

1 DSU with DBM causes harm to the telephone network, the telephone

C December 1996 3610-A2-GB46-60

Page 5

Safety Instructions

The

DBM cannot be used on public coin-operated telephone service provided by the telephone

company. Connection to party-line service is subject to state tarif

fs. Contact the state public utility

commission, public service commission, or corporation commission for information. No repairs may be performed by the user. Should you experience difficulty with this equipment,

refer to the Equipment W

arranty and Support

section.

For Digital Data Service (DDS) installations, inform the local telephone company of the appropriate facility interface code for the service you desire.

DDS Facility

DBM Type

12.0 or 14.4 kbps V.32bis DBM

2-Wire Switched 56 DBM

Interface

Code

04DU5-24 2400 04DU5-38 38,400 04DU5-48 4800 04DU5-56 56,000 04DU5-96 9600 04DU5-64 64,000 04DU5-19 19,200

Data Rate

(bps)

Interface

Code

Data Rate

(bps)

For DBM installations, the proper service and jack must be ordered from the telephone company. Refer to the following table for this information.

DBM Jack Installation Requirements

USOC Jack

(Standalone)

RJ11C Permissive RJ45C Programmable

SJA48 SJA48 (uses an

USOC Jack

(Carrier-Mounted)

RJ21X Permissive RJ27X Programmable

adapter cable)

Canadian Jack

(Standalone)

CA11A Permissive CA27A Programmable

CA1

(metallic channel)

Canadian Jack

(Carrier-Mounted)

CA21A Permissive CA27A Programmable

CA21A (metallic channel)

4-Wire Switched 56 DBM

ISDN BRI DBM SJA11 SJA11 (uses an

SJA56 SJA57 Not available

After the telephone company has installed the requested service and jack, you can connect the DSU with the cable provided. An FCC-compliant telephone cord and modular plug are provided with this equipment. This equipment is designed to be connected to the telephone network or premises wiring using a compatible modular jack that is Part 68 compliant.

adapter cable)

Not available

in Canada CA-A11 CA-A11 (uses an

in Canada

adapter cable)

D3610-A2-GB46-60 December 1996

Page 6

COMSPHERE 3600 Series Data Service Units

Canada

Notice to Users of the Canadian Telephone Network

The Canadian Department of Communications has certified that this equipment meets certain telecommunications network protective, operational, and safety requirements. The Department does not guarantee that the equipment will operate to the user’s satisfaction.

Before installation, verify connectivity of this equipment to the local telecommunications company’s facilities. The equipment must be connected by an acceptable method. In some cases, the telecommunications company’ s inside wiring associated with single-line individual service may be extended with a certified connector assembly (telephone connection cord). The customer should be aware that compliance with the above conditions may not prevent degradation of service in some situations.

If you experience difficulty with this equipment and require service, refer to the Equipment Warranty and Support section.

Repairs to certified equipment should be made by an authorized Canadian maintenance facility. Any repairs or alterations made by the user to this equipment, or equipment malfunctions, may cause the telecommunications company to ask you to disconnect the equipment.

Users should ensure that the electrical ground connections of the power utility, telephone lines and internal metallic water pipe system, if present, are connected together for protection. This precaution may be particularly important in rural areas.

CAUTION

Users should not attempt to make such connections themselves, but should contact the appropriate electric inspection authority, or an electrician, as appropriate.

The load number (LN) is labeled on the equipment. The LN denotes the percentage of the total load to be connected to a telephone loop used by this equipment. T o prevent an overload, the total of the LNs of all devices attached to the loop may not exceed 100. The LN also specifies the appropriate ringing type (A or B), if applicable. For example, LN = 20A designates a load number of 20 and an A type ringer.

Equipment W arranty and Support

If you experience trouble with this equipment, please contact your sales or service representative (as appropriate) for repair or warranty information. If the product needs to be returned to the company service center for repair, contact them directly for return instructions using one of the following methods:

• Via the Internet: Visit the Paradyne World Wide Web site at http://www.paradyne.com

• Via Telephone: Call our automated call system to receive current information via fax or to

speak with a company representative.

— Within the U.S.A., call 1-800-870-2221 — International, call 727-530-2340

If the trouble is causing harm to the telephone network, the telephone company may request that you remove the equipment from the network until the problem is resolved.

E December 1996 3610-A2-GB46-60

Page 7

Table of Contents

Preface

About This Guide v. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

How to Use This Guide Related Documents

1. Product Introduction

Standard DSU Features 1-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Optional DSU Features 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

DBM Common Capabilities TDM/MCMP and Digital Bridge Capabilities

Related Documents

Table 1-1 lists 3600 Series related documentation. The

following is a list of technical reference documents.

• ANSI T1.410 – 1992

• ANSI T1.601 – 1992

• ANSI X3.64 – 1979 (Reaffirmed 1990)

• AT&T T

•

Bell Canada DCTE Specifications – 1989

•

Bell Communications Research T Reference Publication 41028

• Bellcore Special Report SR-NWT-001953

• DATAPHONE II 2600 Series Data Service Units

User’

• EIA/TIA-232-E (ISO 2110)

• Integrated Network Corporation Compatibility

Bulletin CB-INC-101

• ITU-TSS V.35 (ISO 2593)

• Northern Telecom NIS S204-2 1986

• Pacific Bell PUB L-780035-PB/NB

• Pacific Bell PUB L-780036-PB/NB

echnical Reference 41458 echnical Reference 61330 echnical Reference 62310 – 1993

echnical

s Manual

• Number of tributaries:

Provides dedicated

multipoint dial backup for up to 20 tributary DSUs.

• Partial and full backup: Provides multipoint dial

backup for both partial and full backup on DDS multipoint circuits.

• Restoration:

When the DSU rate equals the DBM rate, preconfigured tributary DSUs can automatically drop the backup connection and switch back to the DDS facility when the DDS network is restored.

1-53610-A2-GB46-60 December 1996

Page 16

COMSPHERE 3600 Series Data Service Units

COMSPHERE 3600 Series Product-Related Documentation

Document Name

Document

Number

Table 1-1

Description

COMSPHERE 3600 Series Data Service Units, Models 3610 and 3611, Time Division Multiplexer, Multichannel Multipoint, and Digital Bridge Options Supplement

COMSPHERE 3600 Series Data Service Units, Models 3610 and 3611, Dial Backup Module Options Supplement

COMSPHERE Model 3610 2-port or 6-port TDM/Flex or MCMP/Flex Upgrade Installation Instructions

COMSPHERE 3600 DBM Option Installation Instructions

COMSPHERE 3000 Series Carrier Installation Manual

COMSPHERE –48 Vdc Central Office Power Unit, Installation Guide

COMSPHERE 6800 Series Network Management System, Communications Products Support Command Reference Manual

3610-A2-GB48 Supplement to this User’s Guide. Shipped with all standalone

3610 DSUs with TDM, MCMP, or Digital Bridge options or upgrades. Provides descriptions of TDM, MCMP Bridge features, installation instructions, front panel operation, configuration options and worksheets, troubleshooting, messages, and specifications.

3610-A2-GB49 Supplement to this User’s Guide. Shipped with all standalone

3610 DSUs with Dial Backup Modules or upgrades. Provides descriptions of DBMs, features, installation instructions, front panel operation, configuration options and worksheets, troubleshooting, messages, and specifications.

3610-A2-GZ51 Shipped with field-installable TDM/Flex or MCMP/Flex upgrades.

Contains Model 3610 Flex MUX installation procedures.

3610-A2-GZ52 Shipped with field-installable dial backup upgrades. Contains

installation procedures for all Model 3610 and 3611 DBM types.

3000-A2-GA31 Shipped with every carrier. Contains installation procedures for

the carrier and its components, options, and operation.

3000-A2-GB41 Shipped with every –48 Vdc power unit. Includes descriptions of

features, installation instructions, troubleshooting, specifications, and an equipment list.

6800-A2-GB31 Shipped with software. Provides descriptions of device

commands for interaction between 6800 Series NMS and other product lines.

, and Digital

COMSPHERE 6700 Series Network Management System, User’s Guide

6700-A2-GY31 Shipped with software and is orderable. Provides descriptions of

NMS features, installation instructions, configuration setup, display and statistics options, reports generation, online help conventions, and input forms.

1-6 December 1996 3610-A2-GB46-60

Page 17

Model 3610 Installation

Overview 2-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Before You Begin 2-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Installation Process 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

DSU Installation Planning 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Verifying the S1 Switch Settings 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Powering Up the DSU 2-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Power-Up Routine 2-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Saving and Changing Configuration Options 2-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Home Screen Display 2-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

DDS Network Connection 2-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Network Verification Testing 2-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

DTE Connections 2-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Network Diagnostic Connection 2-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SNA Diagnostic Interface Verification 2-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Async Terminal Connection 2-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Overview

The Model 3610 DSU is delivered with default switch settings and factory-installed software options. The factory default configuration option set is FacT.

The Model 3610 DSU is ready to connect to the network. No on-site assembly is required.

Before You Begin

Before connecting any cables to your DSU, verify the following:

• There is a dedicated grounded ac outlet within

6 feet that is protected by a circuit breaker. Label the circuit breaker that protects the ac outlet and ensure that the circuit breaker is set to ON.

• Your installation site is clean, well-lit, ventilated,

and free from environmental extremes.

ou have contacted the telephone company to

• Y

coordinate installing your DSU to the DDS network. The DSU can only operate at the data rate provided by the DDS network. The DBM, if enabled, should also be connected to the dial network.

• Your package contains a power cord and

ac transformer.

AC Transformer

496-14705-01

CAUTION

Only use the power transformer designed for the Model 3610 DSU. Using other transformers may result in personal injury or damage to the equipment.

2-13610-A2-GB46-60 December 1996

Page 18

COMSPHERE 3600 Series Data Service Units

Installation Process

• Verifying the S1 Switch Settings

• Powering Up the DSU

• Connecting to the DDS Network

• Network Verification Testing

• DTE Connections

DSU Installation Planning

The

Model 3610 DSU is designed for desktop

operation.

• Place the DSU in the planned location.

• Allow 1 to 2 feet of clearance for cable

connections, space for the ventilation slots on the sides, and clearance at the rear for the cable connections.

erify the S1 switch settings as indicated below

• V

Verifying the S1 Switch

The Model 3610 DSU has a switch located under the front panel. To verify or change the S1 switch settings, remove the front bezel:

. Procedure

1. Place a small screwdriver or your thumbs under the two tabs on the outside edges of the front bezel. Firmly press upward to separate the bezel from the tabs.

Front Bezel

COMSPHERE 3610

Front Bezel

Settings

HANDLING

STA

This product is designed to protect sensitive components from damage due to electrostatic discharge (ESD) during normal operation. When performing installation procedur take proper static control precautions to prevent damage to equipment. If you are not sure of the proper static control precautions, contact your nearest sales or service r

PRECAUTIONS

FOR

TIC-SENSITIVE DEVICES

es, however

epresentative.

496-14701-0

2. Swing the front bezel up and set aside.

Change the switch settings if necessary

small instrument. Do not use a pencil.

. Use a

If the DSU has . . . Then use . . .

Two switches Figure A. Four switches Figure B.

4. Reinsert the front bezel’

s hinge tabs into position at the top and swing the bezel down. Snap the bezel back into place.

2-2 December 1996 3610-A2-GB46-60

Page 19

Model 3610 Installation

S1-3

S1-4

Figure A

Switch 1

V.32

Analog

DBM

Interface

(S1-1)

Frame Ground/

Signal Ground

(S1-2)

496-14702-01

Switch Setting Function

S1-1 V

.32

(default)

OFF Programmable transmit output

Analog

DBM only

ON Frame ground (FG) connected to

S1-2

OFF

(default)

ON is to the rear as you face the front of the DSU. OFF is to the front.

Permissive transmit output level of –9 dBm

level between –12 dBm and 0 dBm

signal ground (SG) FG connected to SG through

100 ohm resistor

Figure B

V.35

Test Mode

EIA-232

Test Mode

496-14719-02

(S1-4)

(S1-3)

Switch 1

V.32

Analog

DBM

Interface

(S1-1)

Frame Ground/

Signal Ground

(S1-2)

Switch Setting Function

S1-1

V.32

(default)

OFF Programmable transmit output

Analog

DBM only

ON Frame ground (FG) connected to

S1-2

OFF

(default)

S1-3

(default)

OFF Disables EIA-232 Test mode

S1-4

(default)

OFF Disables V.35 Test mode

ON is to the left as you face the front of the DSU. OFF is to the right.

Permissive transmit output level of –9 dBm

level between –12 dBm and 0 dBm

signal ground (SG) FG connected to SG through

100 ohm resistor Enables EIA-232 Test mode;

Pin 25 controlled by the DSU

Enables V.35 Test mode; V.35 lead NN controlled by the DSU

2-33610-A2-GB46-60 December 1996

Page 20

COMSPHERE 3600 Series Data Service Units

Powering Up the DSU

CAUTION

The power cord and ac transformer have a 3-wire grounding-type plug with a grounding pin. This is a safety feature. Grounding of the unit is vital to ensure safe operation. Do not defeat the purpose of the grounding plug by modifying it or by using an adapter.

Prior to installation, use an outlet tester or voltmeter to check the ac receptacle for earth ground. If the power source does not provide a ground connection, consult an electrician to determine another method of grounding the unit before proceeding with the installation.

. Procedure

1. At the rear of the DSU, insert the round end of the power cable into the receptacle labeled POWER.

V.35

CC/DC

BACKUP

3-Prong

Grounded

Wall Outlet

2. Connect the 3-prong plug at the other end of the cable to an ac outlet.

LINE

POWER

Transformer

Low

Voltage

AC Power

Table-Top

495-14703

NOTE

Before connecting the DSU to any network, ensure that approved primary protectors have been installed on the circuit in accordance with Article 800 of the National Electric Code, NFPA 70, in the United States and Section 60 of the Canadian Electric Code, Part 1, in Canada.

Power-Up Routine

When you apply power for the first time, the DSU

performs a power-up routine and:

• Determines what hardware options are installed, if

. These may include DBM and MUX for

any TDM/MCMP.

Runs a Device T

•

hardware option. All front panel lights flash on and off.

est on the DSU and each installed

2-4 December 1996 3610-A2-GB46-60

Page 21

Model 3610 Installation

. Procedure

1. Watch

2. Continue

The DSU power-up routine can be:

Initiated using the Reset selection in the Control

•

branch.

the LCD during the tests.

Power-Up Tests Please Wait . . .

The

results of each test display briefly as Pass,

Fail, or Abrt. The tests take about 20 seconds to complete. Y

ou are looking for successful test

results.

DSU MUX

s P

ass

Pas

if you receive successful messages. If a Fail message appears or an installed hardware option does not appear, refer to Appendix E,

oubleshooting and

ont Panel Messages

Saving and Changing Configuration Options

For

Model 3610 and Model 361

configurations options from:

• A front panel, or

• A 6700 or 6800 Series NMS, or

• An async terminal (Model 3610 standalone only)

Appendix B provides a Basic Configuration

orksheet, which is a summary of Basic DSU mode configuration option sets. Use the worksheet, the menu tree in Appendix A, and Chapter 4, Tables, for reference.

Configuration options supporting TDM, MCMP digital bridging are in Document No. 3610-A2-GB48. Configuration options supporting DBMs are in Document No. 3610-A2-GB49.

The Model 3610 is preconfigured at the factory for FacT with default settings for a tributary, point-to-point circuit, and a data rate of Auto. Set the data rate to match the service provider’

If you have a point-to-point configuration:

s rate.

• Enable one unit as the control

• Enable the other unit as the tributary

• Set the link configuration option (Table 4-3)

1 DSUs, change

Configuration Option

, and

• Disabled with the PowerOnT

st General

configuration option.

2-53610-A2-GB46-60 December 1996

Page 22

COMSPHERE 3600 Series Data Service Units

Home Screen Display

Pressing the key (double-up arrow) on the front panel changes the display on the Home screen. The following is an example of the Home screen display:

Port1 DSU Auto T Local Remot

• Port 1

= DTE port or aggregate data stream

currently monitored and reflected by DTE status indicators

• DSU

• Auto

= Operating mode

Default setting displays until actual data

rate is detected

• T

= Network position of DSU (tributary in

this example)

In the following LCD examples, the shaded area below the front panel shows the additional options that appear when the

key is pressed. Hardware selections

are filtered when not installed.

Configure: Opts PList Dir

Phone Addr ChgMd Term SPID

Select

Opts (for Configuration Options). The

following screen appears.

Load from: Activ Remt Usr1

Usr2 Usr3 FacC FacT FacB

MPTC MPTT

o save and change options:

. Procedure

From the Home screen, as shown above, select

1. Local (F1). The following screen appears on the LCD.

Local Mode: Stat Bckup Test

Confg Ctrl

access the Configuration (

2. To

key until Confg appears. Press the

the function key below Confg. The following screen appears.

Confg) branch, press

4. The

selections on the screen are configuration option sets stored in the DSU’s memory. Table 2-1 lists the

Load from

menu selections and their

source.

NOTE

You are advised to first save the factory default settings to store a set of working configuration options before changing any configuration options.

From the Load from

menu, any selection except Remote loads a complete set of configuration option values into a working buffer.

2-6 December 1996 3610-A2-GB46-60

Page 23

Model 3610 Installation

5. After changing and not saving configuration options, the following prompt appears when the

key is pressed.

Save Options? Yes No

6. If you press F1 for Y

es, the

Save To screen

appears.

Save to: Activ Remt Usr1

Usr2 Usr3 FacC FacT FacB

MPTC MPTT

Save to is not displayed, press

until the

prompt appears. When you press a function key from the Save to

screen, the DSU performs a verification routine to ensure that the configuration options chosen are compatible.

Table 2-1

Default Configuration Option Sets

Load

from

Activ Active: Currently active configuration options for

the addressed DSU; use to change and save configuration options.

Remt Remote: Configuration options that can be

retrieved from a selected tributary DSU; these will be from the tributary’s Active set and appear based on local hardware. They are filtered when the front panel is locked.

The selected option set can then be displayed, edited, and saved back to the same tributary, another tributary, or the control DSU. The five factory default option sets do not appear when in Remote mode.

Remote is filtered for a multipoint tributary or a

unit with Diag Type of None. Usr1 User 1: User-defined option sets. Usr2 User 2: User-defined option sets.

Usr3

FacC Factory Control: Control DSU factory default

FacT Factory Tributary: Tributary DSU factory default

User 3: User-defined option sets, and factory

default settings for a DBM-

DBM-D, DBM-I, DBM-S, and DBM-V; does not

function as a DSU).

settings.

Source Of

Configuration Options

(Model 361

ou must select SA

7. Y

VE for changes to take effect. After selecting SAVE, the following screen appears.

Edit/Save: SAVE DSU Diag

DBM Gen Bckup MUX PrtSp

LPDA

Continue with network connections and verification testing. When finalized, you can edit and save additional configuration options.

FacB Factory Digital Bridge: Central-site digital bridge

factory default settings. FacB is filtered when MUX CCA is not installed.

MPTC Multipoint Control: Multipoint Control DSU

factory default settings. MPTC is filtered when TDM CCA is installed.

MPTT

When configuring a DBM-X, do not SAVE to Usr3.

Multipoint T factory default settings.

ributary: Multipoint Tributary DSU

Refer to Chapter 3, Chapter 4, and Appendix E for details regarding configuration of your unit. Use the Appendix B worksheet for recording configuration option changes stored in Usr1, Usr2, or Usr3. For a complete list of DSU factory default settings, refer to Table A-1.

2-73610-A2-GB46-60 December 1996

Page 24

COMSPHERE 3600 Series Data Service Units

DDS Network Connection

NOTE

Before connecting the DSU to the DDS network, ensure that approved primary protectors have been installed on the circuit in accordance with Article 800 of the National Electric Code, NFPA 70, in the United States and Section 60 of the Canadian Electric Code, Part 1, in Canada.

To connect the DSU to the DDS network:

. Procedure

1. Plug the DDS network interface RJ48S cable into the DSU jack labeled

2. For Canada, plug the 6-pin cable end (feature number 3600-F1-006) into the wall jack.

DDS Network

Connection

LINE.

Line

POWER

V.35

CC/DC

BACKUP

LINE

If connecting the DSU to a LADS network, set the data rate. There are distance limitations that govern the use of DSUs on the network. See Appendix F for LADS connection distances.

Network Verification Testing

Perform verification testing after any installation. Refer to the Link Configuration option, Table 4-3.

. Procedure

1. For a multipoint link configuration, request a device Identity report to ensure that the DSU is addressed properly (ID from the Status branch).

NOTE

The Model 3610 is delivered with a network address set to

254.

2. For a point-to-point link or multipoint link configuration, verify the port speed [Prt(Kbps) from DSU Options].

3. From the control, perform a Digital T DDS circuit to ensure that the network is functioning (DT from the Test branch).

est on the

If a remote DSU is also connected to the network and

there are no other facility alarms, the:

s green

• DSU’

OK LED lights.

• Alrm indicator is no longer lit.

•

Health and Status screen no longer displays a

No Signal

message. The DDS data rate displays Auto while detecting a rate. Change the Rate(Kbps) to a set rate when the data rate has been detected.

2-8 December 1996 3610-A2-GB46-60

RJ48S

Wall Jack

495-14578-02

Page 25

Model 3610 Installation

DTE Connections

The

distance between the DSU and the DTE must be within the EIA-232 or V.35 interface limits. Refer to Appendix F for LADS connection distances.

For the EIA-232 connector:

• The typical maximum distance is 50 feet at data

rates no greater than 19.2 kbps.

• For distances greater than 50 feet or data rates

higher than 19.2 kbps, use short, high quality cable with low capacitance and a DTE capable of supporting the distance and data rate.

• As specified in EIA-232-D, ensure that the distance

is not greater than 50 feet and the ef

fective shunt capacitance of the circuit does not exceed 2500 pF Calculate the cable capacitance per foot and multiply by the number of feet of cable.

When Port 1 requires a speed higher than 19.2 kbps, the port interface should be set to V.35. For all models using the V

.35 connector

, the maximum distance recommended between the DSU and the DTE is 1000 feet.

To install the Model 3610 DTE connection:

. Procedure

1. Connect the plug end of the DTE cable to the proper port on the back panel of the DSU (EIA232 or V.35). Tighten the two holding screws, if present, to secure the connector

POWER

LINE

BACKUP

CC/DC

Power

Line

Backup

CC/DC

V.35

EIA 232

EIA 232V.35

495-1470

NOTE

If connecting the DTE to the V.35 connector, set the DTE Port in General Configuration Options to V.35 so the DSU can communicate with the DTE (Table 4-4). The default for this configuration option is EIA232.

2. Connect the other end of the cable to the appropriate port on the DTE. Tighten the two holding screws, if present.

3. Perform Local Loopback (LL) and DTE Loopback tests. Refer to the Test Branch

section

of Chapter 3.

Network Diagnostic Connection

hubbing device and an M6BJ cable are needed to connect the control DSU to a 6700 or 6800 Series NMS. The hubbing device provides two 8-pin modular jacks for diagnostic channel (DC) and control channel (CC) connections.

NOTE

When installing 3600 Series DSUs and 3400 Series or DATAPHONE II modems on the same diagnostic channel, install the DSU ahead (upstream) of the modems. This ensures that the DSU maintains contact if the modem loses power.

2-93610-A2-GB46-60 December 1996

Page 26

COMSPHERE 3600 Series Data Service Units

install the hubbing device:

SNA Diagnostic Interface Verification

. Procedure

1. Plug the 4-pin modular plug of the hubbing device

CC/DC

BACKUP

CC OUT/DC IN

located on

V.35

Hubbing

Device

3000HUBBING DE

MODEL #3000-F3

into the modular jack labeled CC/DC the rear of the DSU.

NMS Network

Connection

CC/DC

LINE

POWER

NMS

CC IN/DC OUT

M6BJ

Cable

3000HUBBING DEVICE MODEL #3000-F3-300

CC IN/DC OUT

. Procedure

1. Enable the LPDA option (refer to Table 4-5).

2. Send a DSU/CSU and Line Status test from the

IBM NetV

iew console to the control DSU and

each tributary.

As the status for each DSU is returned to NetV

3. check the network address. If the address is correct, the verification procedure is complete. Refer to Appendix D,

SNA Diagnostics

, for

additional configuration information.

Async Terminal Connection

Use

a CC-to-DB25 cable to connect an async terminal to a DSU. This feature is available for the Model 3610 standalone unit only Appendix C,

Async T

. T

o enable the async terminal, see

erminal Operation

. Procedure

1. Plug the 4-pin modular plug of the DSU CC-to-DB25 cable (feature number 3600-F3-504) into the DSU jack labeled CC/DC.

iew,

496-14723-0

2. Plug one end of the 6-pin cable into the hubbing device jack labeled

Plug the opposite end of the M6BJ cable into the

CC IN/DC OUT

appropriate 6700 or 6800 Series NMS jack.

Refer to your COMSPHERE 6700 or 6800 Series NMS documentation to control and configure the DSU from the NMS.

Async Terminal

Connection

CC/DC

V.35

CC/DC

BACKUP

LINE

POWER

Holding Screws

T o Async

T erminal

495-14577-02

2. Connect the EIA-232 (DB25) end of the cable to the async terminal. T

ighten the holding screws.

2-10 December 1996 3610-A2-GB46-60

Page 27

Front Panel Operation

Overview 3-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Front Panels 3-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

LCD 3-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Keypad 3-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Status Indicators 3-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Async Terminal Operation 3-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Menu Structure 3-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Top-Level Menu 3-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Local/Remote Menu Branches 3-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Status Branch 3-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Health and Status 3-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Device Health and Status 3-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Expanded Health and Status 3-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Subnetwork Health and Status 3-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

DTE Status 3-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Circuit Quality 3-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Identity 3-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Terminal Power 3-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Backup Branch 3-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Test Branch 3-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Abort 3-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Device Test 3-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Loopbacks 3-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Local Loopback 3-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

DTE Loopback 3-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Digital Loopback 3-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Remote Digital Loopback 3-11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Bilateral Loopback 3-11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Digital Test 3-12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

End-to-End Test 3-12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Bit Error Rate Test 3-13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Lamp Test 3-13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Dial Tone Test 3-13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Configuration Branch 3-14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Options 3-14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

User Storage Areas 3-14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Remote DSU 3-14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Poll List 3-15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Directory 3-15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Phone 3-15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Network Address 3-15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Change Protocol Mode 3-15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Async Terminal 3-15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SPID 3-16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Menu 3-16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-13610-A2-GB46-60 December 1996

Page 28

COMSPHERE 3600 Series Data Service Units

Control Branch 3-16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Transmitter Control 3-16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

LEDs 3-16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

External Leads 3-16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Displaying External Leads 3-17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Reset 3-17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Remote Branch 3-17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Front Panel Security 3-18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Overview

You can manage a 3600 Series DSU from:

• The front panel

•

An async terminal

•

An NMS

This chapter describes how to manage the DSU using the front panel. Refer to Appendix C for async terminal operation.

The menus are organized as a branching hierarchy or menu tree. Appendix A contains this menu tree. Appendix B contains a Configuration W Basic mode configuration option settings. Basic mode represents a DSU with no additional hardware features installed. Refer to these reference materials as you proceed through the DSU’

s menus.

Refer to your COMSPHERE 6700 or 6800 Series NMS documentation to control and configure the DSU from the NMS.

orksheet with

The front panel for both models provides a 2-line,

16-character LCD and keypad for accessing menus to:

Monitor health and status

•

• Initiate dial backup operations

•

Initiate diagnostic tests

• Set, change, and save configuration options

The front panel’

s LCD displays the result of any command initiated from the front panel. Front panel basic operation does not vary with the addition of DSU options (DBM, TDM, MCMP However

, menu or selection displays vary based on

, or SNA Diagnostic Interface).

features installed and enabled.

LCD

Front Panels

The front panel is the user interface to the DSU. There

are two types of front panels:

• The front panel on the Model 3610 (Figure 3-1)

• The shared diagnostic control panel (SDCP) used

with the Model 361 COMSPHERE 3000 Series Carrier

3-2 December 1996 3610-A2-GB46-60

1 (Figure 3-2) in a

COMSPHERE 3610

Network/Device

Alarm

Alrm Test Dial TXD RXD

Test

Mode

Dial

Backup

Figure 3-1. Model 3610 Front Panel

RTS CTS DTR LSDDSR

107

105 106 108 109104103

DTE Status

Indicators

496-12347b-06

Page 29

Front Panel Operation

Network/

Device Alarm

Test Mode

Dial Backup

DTE

Status

Indicators

SDCP

Indicator

(Front Panel)

Status

Ok Alrm Test Dial

TXD

103

RXD

104

RTS

105

CTS

106

DSR

107

DTR

108

LSD

109

Front Panel

Spkr

Multirate

DSU

3611

496-14714-0

Figure 3-2. Model 3611 DSU Faceplate

Moves Up One Level

from Current

Display

LCD First

Line

LCD

Second

Line

Returns

Display

Top-Level

Port 1 DSU 9.6 T Local Remot

Left

Scroll

Key

Function

Keys

Keypad

There are seven keys on the Model 3610 front panel.

• The

these keys move the cursor one character to the left or right to allow one entry at a time. All menus and display screens wrap around. Scrolling takes you to the first or last selection of the menu.

• The F1, F2, or F3 function keys select the item

displayed directly above the key on the LCD. Refer to the following table.

key terminates any work in progress. key returns to the previous display.

and

keys scroll. For input screens,

Right

Scroll

Key

LCD

The 2-line, 16-character LCD on the front panel

displays the following information:

• Menus: The menu structure is provided in

Appendix A and the menu branches appear throughout this chapter.

• Input Screens:

customer ID, the network address of a remote DSU, or test durations. Input screens, such as test run time, appear with a blinking cursor to indicate that a field can be changed.

•

Display Scr

information and test results.

Used to enter information such as a

eens: Provide configuration

Function

Key

LCD Input Screen

Each key press increments the

↑

number, usually by 1.

Each key press decreases the

↓

number by the appropriate amount.

F3 One of the following appears, depending on

the purpose of the current display:

Enter Selects the value displayed. Undo Voids any current changes. Dial Dials the telephone number shown

on the first line of the display. Available with installed DBM.

Enab Enables options. Disab Disables options. Displ Allows viewing of EIA lead status.

3-33610-A2-GB46-60 December 1996

Page 30

COMSPHERE 3600 Series Data Service Units

Status Indicators

Status indicators continuously provide information on

Alrm

Test

Dial

LEDs

TXD RXD

RTS CTS DTR LSDDSR

107

105 106 108 109104103

the current operating condition of the DSU or DBM.

able 3-1 describes all status indicators.

•

Model 3610 DSU status indicators appear on the front panel.

• The carrier-mounted Model 361

1 status indicators

Network/Device

Alarm

Test

Mode

Dial

Backup

DTE Status

Indicators

496-14716-01

appear on the SDCP.

Table 3-1

DSU Status Indicators

LED Label

OK Green Health and status indicator: DSU operation is normal. The OK LED flashes two times per second

Alrm Red Health and status indicator: There is an alarm in the local or remote DSU, DBM, or DDS facility, or

Color Description

when a message from an NMS is present. When lit, the DSU has not detected any alarm listed under Alrm, below.

there is a corrupted configuration. For a DSU with TDM or MCMP, the alarm may be in the communications path between the DSU and TDM or MCMP circuit card.

Alarms at the local or remote DSU cause the Alrm status indicator to light on the affected DSU. Refer to Table E-5, Device Health and Status Messages, for further details. DBM health and status messages are in Document No. 3610-A2-GB49.

Test Yellow When the active core is being tested, the active DSU or DBM device is either performing a test or

other DSUs or DBMs are in Test mode.

The DSU or DBM is automatically put into Test mode when a remote DSU or DBM is performing a test disruptively. A DSU or DBM in Test mode has the DTE interface turned Off.

DSU with TDM or MCMP: Any test involving the TDM or MCMP also involves the DSU. The test is integrated into the DSU’s Health and Status report. When the active core is being tested, any port included in the active core is also tested.

Dial Yellow DBM is active:

Rapid flashing: Call establish in progress Slow flashing: Call established but in Standby mode Steady ON: Backup call established and active

TXD, RXD, RTS, CTS, DSR, DTR, LSD

Green DTE status indicators: Internal lead states at the DSU/DTE interface for circuit designations:

Control circuit active (CTS, DSR, DTR, LSD, and RTS)

Data circuit spacing (RXD and TXD)

DSU with TDM or MCMP: The circuit external lead states for any TDM or MCMP ports can be selected through the front panel’s Control branch.

Model 3610 DSU: The monitored port is displayed on the front panel LCD. Model 361

1 DSU with TDM or MCMP:

The TDM or MCMP faceplate indicates the monitored port with port LED lit. DTR is always on. Refer to DTE Status on front panel for DTR status.

Front Panel

(Model 361 only)

Yellow The currently selected DSU at the SDCP: The SDCP addresses one DSU at a time.

Model 361

1 DSU with TDM or MCMP: The TDM or MCMP circuit card has the same address as

the associated DSU and is also addressed.

3-4 December 1996 3610-A2-GB46-60

Page 31

Front Panel Operation

Async Terminal Operation

You can use an async terminal in place of the front panel to manage a standalone Model 3610 DSU. When enabled, the async terminal interface:

• Supports a VT100-compatible terminal

•

Is set to VT100 standards of 9.6 kbps data rate, 8 bits, 1 stop bit, and no parity

• Emulates the front panel

Menus and selections are the same as operating the unit from the front panel. However

, the async terminal is not limited to three selections per screen. An entire range of selections or information is presented on one screen. If connecting a modem for remote access, refer to Appendix C,

Async T

erminal Operation

Menu Structure

You

access the menu tree, a representation of the DSU’s menu structure, via the front panel. Use the menu, shown in Appendix A, as a guide as you proceed through the branches of the DSU.

The menus that appear depend upon the DSU’s function within the network (i.e., control or tributary) and the hardware options that are installed (e.g., a DBM or MUX).

A Model 3610 DSU comes from the factory configured as a tributary

, while the Model 361 configured as a control. Refer to Chapter 4 before changing or customizing the default settings. Table A-1 lists all DSU factory default settings.

1 DSU comes

When the DSU power-up routine occurs or the key is pressed, the Home screen display appears. The beginning of the LCD display indicates the DTE port or aggregate data rate (Aggr). If the DDS signal has not been located yet, Auto will display

Aggr DSU 9.6 T Local Remot Msgs

The top-level menu contains the:

• Local selection: For a control DSU.

• Remote selection: Used for control of a remote

DSU. Refer to the Remote Branch section, p. 3-17.

•

Messages (

Msgs

) selection: Appears when an NMS message has been received and not cleared. The OK LED flashes. Once the NMS messages are cleared, the Msgs selection disappears and the OK LED no longer flashes.

Local/Remote Menu Branches

TOP-LEVEL MENU

Stat

Local

Bckup

Remot

Address

Test

Msgs

Confg

Ctrl

495-12970

Top-Level Menu

Access

to all network management tasks begins at the

top-level menu, the head of the menu hierarchy.

TOP-LEVEL MENU

Local

Remot

Address

Msgs

495-12970

The

Local menu has five branches; the Remote menu has four (Bckup is not available). Each selection leads to submenus.

• Status (Stat) branch

•

Backup (

• T

est

Bckup) branch

branch: The T

est branch does not appear when the DSU is in Display mode. The front panel is locked and the DSU is in read only mode. Authorized personnel can change access. Contact your system administrator for further details.

• Configuration (Confg) branch

• Control (Ctrl) branch

3-53610-A2-GB46-60 December 1996

Page 32

COMSPHERE 3600 Series Data Service Units

Status Branch

The Status (Stat) branch reports on the:

Health and status of the DSU and DBM

•

• DTE interface

• Circuit quality:

— For an analog DBM connection, Network

Signal Level and Quality

— For a DSU with App Module ID displaying

XLOOP, DDS Signal Quality

• Identity of the DSU (see Table 3-2)

• Terminal’s power – status of voltage on the DTE’s

RTS lead

Refer to Appendix E for DSU and MUX Health and

Status messages.

TOP-LEVEL MENU

Local

Bckup

Remot

Address

Test

Stat

H/S DTE CircQ ID TPwr

Port

Select

Msgs

Confg

Ctrl

All alarm and status conditions appear for the specified

DSU at the time H/S is selected. For a:

• Local DSU: alarm and status conditions are updated

every 2 seconds.

•

Remote DSU: display reflects the actual alarm and status conditions at the time of access.

Device Health and Status

Device Health and Status (Devic) reports health and

status information for a selected DSU. After 15 minutes without a key press, the Device Health and Status (H/S) reappears on the front panel. See Appendix E for Health and Status messages.

H/S: 22:31:03→*

56 DDS

When the digital circuit is the active link,

• The first line on the LCD includes:

— A running timer (hhh:mm:ss) to reflect the

length of time the DSU has been operating. This timer is displayed until the time exceeds 254:59:59, when the time is replaced with MAX.

— Display of → to indicate that additional health

and status messages exist. Use the key to scroll through the messages. The unit automatically scrolls through additional messages approximately every three seconds.

Devic Expan Subn

Health and Status

Health and Status (H/S

of the DSU, and if installed, DBM H/S. DSU and line conditions are automatically scanned for normal limits.

There are three types of Health and Status reports:

• Devic (Device Health and Status)

• Expan (Expanded Health and Status)

• Subn (Subnetwork Health and Status)

3-6 December 1996 3610-A2-GB46-60

) displays the health and status

496-12970-02

—

An asterisk (*) when an NMS is polling the control DSU or a control DSU is polling a tributary.

• The

second line displays:

— The DSU’

s aggregate data rate or test alarms.

— A DDS facility alarm if the DDS data rate is

not available. Refer to the Rate(Kbps) configuration option (Table 4-1).

Page 33

Front Panel Operation

Expanded Health and Status

Expanded Health and Status (Expan) appears during

an automatic backup for the local DSU when there is:

• A dialing attempt failure.

An unrequested disconnect after a successful

•

connection.

Subnetwork Health and Status

Subnetwork Health and Status (Subn

information from a DSU’ DBMs assigned to that DSU’

s subnetwork of all DSUs and

s active poll list. The downstream network addresses and their current status are listed.

To page through the tributary addresses from the front

panel, press the:

• F1 key for the next highest network address.

• F2 key for the next lowest address.

Refer to Table E-6 for Subnetwork health and status

messages and recommended action.

) displays status

Circuit Quality

Circuit Quality (CircQ

Receive Signal Loss (DDS RxLoss) based on peak detection of the received signal. The DDS RxLoss display is available when App Module ID displays XLOOP except when MUX Function is set to EBrdg.

The approximate DDS RxLoss appears when the decibel range is between 0 (zero) and 65 and displays >65 for a loss greater than 65 dB. The following display reflects a DDS Receive Signal Loss of 38 decibels.

Circuit Quality: DDS RxLoss: 38dB

Circuit

quality also displays the level and quality of the signal being received from the network when a V.32 analog DBM is active. When an analog DBM is not active, the first four measurements display an x.

) is a display showing the DDS

Identity

DTE Status

DTE

status is a snapshot display showing the status of the external DTE interface of the local or remote DSU/DBM. If more than one port is active, a port number selection screen appears.

•

The local DSU status display is updated every 2 seconds.

• The remote DSU status is updated approximately

every 3 seconds.

From the front panel, the DTE interface statuses appear in sets. Use the status.

or key to view each DTE lead

Identity (ID) displays the DSU’s model number

, serial number, software/firmware version, network address, DSU rate and installed options.

Table 3-2 lists the Identity information provided for the

DSU and its options. One field appears at a time. Press the

key to display the next field.

When the control DSU firmware version is less than

7.24 but greater than 1.10, the tributary SW Version changes need to be made as shown in T

able G-1.

Terminal Power

Terminal Power (TPwr

connected DTE’s EIA-232 and V.35 interface. The DSU checks the state of the R power status.

For both the EIA-232 and V

line displays:

• On if the voltage is less than –3V or greater than

+3V.

• Off if no power is detected on the RTS lead.

) displays the status of the

TS lead and reports the DTE

.35 interfaces, the second

3-73610-A2-GB46-60 December 1996

Page 34

COMSPHERE 3600 Series Data Service Units

Table 3-2

Identity Descriptions

Field Name

Model: 3610 or 3611. S#: Unit serial number. DSU SW ver: Software/firmware version residing on DSU or changed using the SW Vers configuration option in

Table 4-4. Refer to Appendix G,

Netwrk Addr: Using ADp protocol, the ADp network address appears.

Using DPII protocol, the DATAPHONE II address appears.

DSU Rate: Aggregate DDS data rate set for DSU Rate(Kbps) configuration option. Displays Auto while unit is

locating the data rate. This does not appear for a DBMDBM SW ver: The software/firmware version residing on the DBM. Not valid with V.32 DBM. DBM Rate: Aggregate data rate set for DBM Rate(Kbps) configuration option. DBMtyp:

MUX Card: TDM/MCMP. Appears when the MUX circuit card is installed.

xxx yy.y z

Type of DBM installed.

I V V.32 or DBM-V, 2wS 4wS

yy.y z

displays P when the Primary Core is set to Yes.

ISDN or DBM-I, 2-wire Switched 56 kbps DBM or DBM-D, or

4-wire Switched 56 kbps DBM or DBM-S

indicates the DBM’s maximum data rate.

xxx

can be:

Information Displayed

Firmware Version Control Information

MUX App: Currently configured application of TDM/MCMP. Possible values are:

TDM, MCMP

, CBrdg (central-site bridge), EBrdg (extended bridge), and None (TDM/MCMP circuit card disabled)

MUX SW ver: Software version residing on the TDM/MCMP circuit card. App Modul:

ASPEN. Allows Single-Port Async/Sync operation. CISC or 64CC:

CISC when the Clear Channel with Integrated Secondary Channel chip is present. 64CC when the CISC chip is not present.

LPDA-2. Indicates that the SNA Diagnostic Interface option is installed. SEQU. Sequoia chip is installed and allows Single-Port Async/Sync operation. Installed in models

3610-A4-xxx or 3611-B4-xxx. XLOOP. Provides enhanced DDS mode.

3-8 December 1996 3610-A2-GB46-60

Page 35

Front Panel Operation

Backup Branch

The

Backup (

configuration option Network Interface (NetIntf AggSw or Forc or a DBM is installed. The DSU provides an internal aggregate data stream for diagnostics, standby mode, and framing on the alternate V.35 or EIA-232 interface of Port 1. The aggregate port can be connected to an external dial backup unit (DBU).

Stat

Abort Bkup Dial DrBU Disc →Dial →DDS AggSw →NetI

For additional use of the Backup branch, refer to the TDM/MCMP/Digital Bridge Options Supplement, Document No. 3610-A2-GB48, and the DBM Options Supplement, Document No. 3610-A2-GB49.

Bckup) branch appears when the

TOP-LEVEL MENU

Local

Remot

Address

Test

Msgs

Confg

Bckup

) is set to

Ctrl

496-12971-0

TOP-LEVEL MENU

Msgs

Confg

Stat

Local

Bckup Ctrl

Remot

Address

Test

DSU DBM

Abort Devic Lpbk Lamp

Subn Selective

LL DTE DL RL

Port

Select

Start Start Start Port

Select

Address Address

Run Tim

Port

Select

Address

Displ Clr

# Blocks

BERT

EE DT

Port

Select

DTon

496-12972-03

Test Branch

The Test for the DSU, the DDS circuit, the DBM, and the backup circuit. When the tributary DSU receives a test request from the control DSU, the DSU aborts any locally initiated test in progress.

branch provides extensive testing capabilities

NOTE

Running a test can affect your application data or may cause your application session to be dropped depending upon the protocol, front-end processor, and time-out parameters. No data or acknowledgment messages will be transmitted while the test is in progress on the active core.

Abort

allows you to stop a test that is running. The DSU is not allowed to run any other test until the test in progress is aborted or completes.

There are two selections for aborting a test:

• Subn (Subnetwork) displays only at the control

DSU. This selection terminates any test running at the control DSU or at a tributary DSU or DBM associated with the control.

• Selective

the local DSU. Does not appear in Remote mode with MUX Funct set to CBrdg or NetIntf set to AggSw or Forc.

After selecting either Subn or Selective, the test

terminates and the front panel displays Command Complete.

terminates whatever test is in progress at

3-93610-A2-GB46-60 December 1996

Page 36

COMSPHERE 3600 Series Data Service Units

Device Test

Device (Devic) T

installed, the DBM must be in Idle mode.

If a network loopback is in effect when you initiate a

Device T

est, the test will not run and

the second line on the front panel.

If the DSU fails the test, the:

Second line displays

•

• Alarm (Alrm) status indicator is lit.

•

Device H/S message appears in the DSU’ and Status report for the diagnostic channel (DC in DiagConn configuration option, Table 4-3).

The Alarm status indicator stays lit and the failure appears in the DSU’s Health and Status report until a Device T

est ends with but you must be aware that the DSU may not function properly.

est is an internal self-test. If a DBM is

Abort

appears on

Fail.

s Health

Pass. Until then, you can proceed

Loopbacks

Local Loopback

Local Loopback (LL) is session-disruptive; performing

the test disrupts data. In Local Loopback, the DTE may run a test to determine if the DTE to DSU connection and the DSU itself are functioning properly. The DSU must be connected to the DTE, but the network connection to the DSU is not required for this test.

Once the LL loopback test begins, the message

Command Complete

appears. While the DSU is in Local Loopback, any data transmission from the DTE is returned as received data. An operator can send a test pattern and verify correct reception of the test. The DSU does not monitor this testing. LL does not appear when in Remote mode.

DTE Loopback

DTE Loopback (DTE

DTE/DCE interface on a per-port basis without affecting the operation of the remaining ports. Once the DTE loopback test begins, the message appears. DTE does not appear when in Remote mode.

) loops back the data path at the

Command Complete

A loopback is any test that verifies a device’

s integrity by connecting the device’s output in one direction to the device’s input in the other direction and then checking the received signal for errors.

Loopback (Lpbk) provides four loopback tests:

• Local Loopback (LL)

• DTE Loopback (DTE)

• Digital Loopback (DL)

• Remote Digital Loopback (RL)

Figures 3-3 and 3-4 show the direction of each loopback on the circuit. All loopbacks are labeled based on the control DSU. Loopbacks do not appear with a multipoint DSU in Remote mode. Refer to the figures as you read about loopbacks.

Digital Loopback

Digital Loopback (DL) allows manual testing of the

remote end of the circuit. For example, a Digital Loopback may be required to complete an external bit error rate test (BERT) from the remote DSU.

The local DSU receives test data, loops it back to the transmitter before the DTE interface, and returns it to the network. Once the digital loopback test begins, the message

Command Complete appears.

3-10 December 1996 3610-A2-GB46-60

Page 37

Front Panel Operation

Remote Digital Loopback

Remote Digital Loopback (RL

external device, such as a protocol analyzer connected to the local DSU’s DTE interface. Data input is sent to the remote DSU and returned for error detection.

In Remote Digital Loopback, the local DSU (control or tributary) puts the remote DSU into Digital Loopback. A control DSU can originate Remote Digital Loopback on a point-to-point or multipoint network. A tributary DSU can originate Remote Digital Loopback in a point-to-point network only

. RL does not appear when in Remote mode.

Remote Digital Loopback can also be initiated by receiving a V.54 pattern that starts a Digital Loopback. For point-to-point configurations, enable configuration options V

.54 Lpbk (V.54 Loopback – Table 4-1) and RespondRDL (Respond to Remote Digital Loopback – Table 4-4).

The control DSU can send a Digital Loopback to a multipoint tributary and perform a Remote Digital Loopback on the multipoint tributary. A Digital Loopback cannot be initiated from a multipoint tributary.

) supports testing by an

When a DSU (control or tributary) originates Remote Digital Loopback, both the originating DSU and the targeted DSU enter T the originating DSU or the tar

est mode. No other test can be run at

geted DSU until the Remote

Digital Loopback is aborted.

Bilateral Loopback

Bilateral Loopback combines Digital (DL) and DTE loopbacks and operates simultaneously in the same DSU. For point-to-point configurations, use the Bilateral Loopback (Bilat Lpbk) configuration option from the General (Gen) configuration option set (Table 4-4).

Once the loopback test begins, the message Complete appears. If the Bilateral Loopback configuration option is activated, requesting a Remote Digital Loopback (RL) or Digital Test (DT) automatically initiates a DTE Loopback. A Digital Test (DT) starts a Remote Loopback which causes a Bilateral Loopback at a remote site.

Command

DTE

DL on a

Port

COMSPHERE 3610

Control

COMSPHERE 3610

Control

DSU

RL on

NETWORK

Aggregate

Figure 3-3. Loopbacks, Example 1

DL on

Aggregate

NETWORK

COMSPHERE 3610

Tributary

DSU

COMSPHERE 3610

Tributary

DSU

RL on a

Port

DTE

Bilateral

Loopback

DTE

496-14493-0

DTE

496-14762-0

Figure 3-4. Loopbacks, Example 2

3-113610-A2-GB46-60 December 1996

Page 38

COMSPHERE 3600 Series Data Service Units

Digital Test

The Digital T

of DSUs or DBMs and the data circuit between them.

The Digital T generator. In a multipoint network where only a control DSU can originate a Digital Test, tributary DSUs not involved in the test are placed in Test mode for the duration of the test.

Digital test is not available when:

• In remote mode, or

• Alternate Port 1 has NetIntf set to forced on (Forc)

with the DSU in Backup mode, or

• LPDA-2 configuration option is enabled

The local DSU transmits the test pattern over the network to the remote DSU, which is placed in Remote Digital Loopback (RL); the user inputs the length of time.

During the test, the TXD, RXD, and R the states of the leads at the DTE interface. At the conclusion of the test, the local DSU releases the remote DSU from Digital Loopback.

o review the results of the DT test, press ↑ and select

T Display (Displ). When using the front panel, press the

key to scroll through the results shown in Table 3-3. The Clear (Clr) selection clears the test results and resets the counter to zero.

Results

Time: Running test timer. Tot

Error: Err

Secs:

Run on: port

When the test is complete:

est (

DT) checks the functionality of a pair

est uses the local DSU’

s test pattern

TS LEDs show

Table 3-3

Digital Test Results

Information Displayed

Running count of bits in error. MAX appears when the error count reaches about 65000.

Running count of errored seconds: An errored second is at least one error detected during a 1-second time period.

Port number appears if this test was not run on an aggregate data path.

End-to-End Test

The End-to-End (EE

tributary DSU or DBM and the network circuit between them in both directions independently. Packets of data are transmitted between DSUs or DBMs.

The test determines the direction of the data transmission problem if the circuit is the cause. If an End-to-End test is run, the in-band diagnostics are disrupted. EE does not appear when in Remote mode.

To review the results of the EE test, press ↑ Display (Displ). When using the front panel, press the

key to scroll through the results shown in Table 3-4. The Clear (Clr) selection clears the test results and resets the timer to zero.

End-to-End Test Results

Results

Time: Local &

Tot Block: Local &

Rx Blk Err: Local &

Tx Blk Err: Local &

Rx TimOuts:

Reported

remote DSU/DBM

Local DSU/DBM only

) test analyzes a control and a

Table 3-4

Information Displayed

Running test timer.

Number of blocks completed.

Number of incoming blocks with errors detected, indicating an error in the incoming transmission path.

Number of blocks with errors detected at the remote DSU, indicating an error in the outgoing transmission path.

Number of blocks that were not received or acknowledged by the remote DSU or DBM.

and select

* Local refers to the test initiator.

When the test is over:

• The top line display changes from Active to Final.

• The second line changes from Please wait . . . to

either Command Complete or Command Failed.

• The top line display changes from Active to Final.

• The second line changes from Please wait . . . to

either Command Complete or Command Failed.

3-12 December 1996 3610-A2-GB46-60

Page 39

Front Panel Operation

Bit Error Rate Test

The Bit Error Rate T disruptive test that transmits a pseudo-random pattern. The test pattern is set to Standard 511 test pattern or AT&T (compatible with DPII 2500/2600 DSUs) using the Tst Pattern configuration option (Table 4-4).

BERT is used to analyze the network circuit. The results can be monitored by simultaneously executing a BERT in the local and remote DSUs. The Bit Error Rate Test is designed for point-to-point networks only; use the Digital Test (DT) for multipoint networks. This test is not available for a control DSU with the DBM in Backup mode or when in Remote mode with in-band framing.

The test continues until aborted from the front panel, an async terminal, or an NMS. This test can be run on an aggregate or per-port basis. When run on an aggregate basis, in-band diagnostics are disrupted.

o display the results of the BER select Display (Displ). The results are shown in Table 3-5. The Clear (Clr) selection clears the test results and resets the timer to zero.

est (

BERT

) is a session-

T test, press ↑ and

Lamp Test

The Lamp

and the LCDs functional.

• All LEDs are functioning if all the status indicators

• In a COMSPHERE 3000 Series Carrier

• The LCD on the front panel or SDCP alternately

Pressing any key except the DSU T LCD and LEDs stop flashing.

test is a test of the status indicators (LEDs) . Any indicator that does not flash is not

on the Model 3610 front panel are flashing.

, the status

indicators on the SDCP remain ON.

flashes solid blocks, followed by a character set display.

key returns you to the

est menu to abort the test. Once the test aborts, the

Dial Tone Test

The Dial T dial tone. This selection does not appear in the DSU’s Test branch.

one test (

DTone

) allows a DBM to test for

Table 3-5

Bit Error Rate Test (BERT) Results

Results

Time: Running test timer. Tot

Error: Err

Secs:

Run on: port

Running count of bits in error. MAX appears when the error count reaches about 65000.

Running count of errored seconds. An errored second is at least one error detected during a 1-second time period.

Port selected for testing.

Information Displayed

When the test is over:

• The top line display changes from Active to Final.

• The second line changes from Please wait . . . to

either Command Complete or Command Failed.

3-133610-A2-GB46-60 December 1996

Page 40

COMSPHERE 3600 Series Data Service Units

Configuration Branch

The Configuration (Confg) branch allows you to

configure or customize the DSU and its options to:

• Fit site requirements.

• Enter and change telephone numbers (if a DBM is

installed).

•

Specify the protocol used by a connected NMS.

TOP-LEVEL MENU

Remot

Address

Test

Stat

Local

Bckup

Confg

Opts PList Dir Phone Addr

Save

Usr1

Usr2

Displ Chang

Activ

Load

Add

Clr

Acq

Skip

Delet

Remt

Address

ChgMd

ADp

DPII

Enab Pswrd CIDDisab

Pswrd

Usr3

FacC

Msgs

Term

FacT

SPID

Save

MPTC

FacB

Enab

Ctrl

Disab

MPT

Options

Options (Opts change DSU, Diagnostic, DBM, General, Backup, MUX, and LPDA-2 configuration options.

The selections on the libraries of configuration options stored in the DSU’s memory. Refer to:

Saving and Changing Configuration Options

•

section in Chapter 2

• Table 2-1 in Chapter 2 for default configuration

option set content descriptions

• Table A-1 in Appendix A for all DSU factory

default configuration option settings

• Table E-4 in Appendix E for Configuration Error

Messages

) allows you to save, copy

Load from

menu are sets or

, and/or

User Storage Areas

Usr1, Usr2, and Usr3 are storage areas for user-defined configuration option sets. Use these storage areas to:

• Maintain predetermined option sets for specified

DSU, Diag (DSU, DBM, and Gen), DBM, Gen, Bkup, and LPDA configurations.

• Permit the rapid loading of an entire configuration

option set after changes have been saved for reuse.

• Save the time required to change each individual

configuration option.

If configuration option changes are entered in Active, the current set of options are restored if a power-up test occurs.

Remote DSU

Activ Usr1 Usr2 Usr3

SAVE DSU DBM Gen Bkup MUX

Activ

Activ Usr1 Usr2 Usr3

3-14 December 1996 3610-A2-GB46-60

Diag

DSU DBM Gen

Remt Usr1 Usr2 Usr3

Address

Selecting Remt from the Load from

menu results in configuration options appearing based on hardware installed at the remote location.

PrtSp

LPDA

Remt requires a remote address. The remote address

selections range from 1 to 255 for ADp protocol and 1 to 80 for DPII protocol. If you want to save configuration options to all of your remote devices, select the broadcast address (

192). After the configuration options are saved,

the changed configuration options are broadcast to the entire network once.

When configuring remotely, it is recommended that the

496-12973b

control and tributary DSUs have the same firmware version, or that the control has the highest version.

Page 41

Front Panel Operation

Poll List

Poll List (PList) maintains or changes a DSU’

list. A poll list identifies all DSUs or DBMs one level downstream in the network. When an NMS is polling a control unit or a control unit is polling a tributary asterisk (*) appears in the Health and Status display

• A control DSU includes its tributary DSUs, or

DSUs and DBMs, in its poll list.

• A tributary DSU includes any extended control

DSUs, DBMs, or APL modems that are attached to the diagnostic channel.

Poll List is available in the Local branch to a DSU with

nondisruptive or mixed diagnostics. A poll list can be:

•

Displayed (

Displ)

• Cleared (Clr)

•

Changed (

• Added (Add

list; for NonDisruptive

Chang) – Activate, delete, or skip.

) – Adds the local address to the poll

MCMP only

• Acquired (Acq) – Automatically generated using

the Acquire Poll List command. Abort is available to stop the Acq command.

Command Complete

appears when the poll list is

completed.

s poll

, an

Network Address

Network local DSU, and is available from the Local branch. The DSU’ acquires an address equal to the DSU’ is recommended that you assign odd numbers to DSUs.

•

• DPII address range is 1 to 80

address (

Addr) is the network address of the

s network address is numeric. A DBM automatically

s address plus 1; it

ADp address range is 1 to 255

Change Protocol Mode

Change Protocol Mode (ChgMd the network management protocol from the front panel. The protocol selections are:

•

Advanced Diagnostic (ADp) used by the 6700 and 6800 Series NMS

• DATAPHONE II (DPII) used by the 6800 Series

NMS and DA

TAPHONE II System Controller,

Diagnostic Console, and Network Controller

ChgMd is not available on a tributary DSU or DBM configured for disruptive or no diagnostics (Diag T Disr or None), or a single-port multipoint tributary DSU.

Both the control and tributary DSUs must be configured for the same protocol. In a carrier-mounted configuration, the SDU must be configured for the same protocol as the DSU.

) allows you to select

ype =

Related Documentation

Configuration digital bridging are in Document No. 3610-A2-GB48. Configuration options supporting DBMs are in Document No. 3610-A2-GB49.

options supporting TDM, MCMP

The tables show the following configuration option

information:

, and

• Name of the configuration option followed by a

colon (:) and the factory default setting for FacT (tributary).

All selectable options.

•

• Description of the configuration option.

•

Description of each selectable setting.

4-13610-A2-GB46-60 December 1996

Page 46

COMSPHERE 3600 Series Data Service Units

Table 4-1

(1 of 3)

DSU Configuration Options

Rate(Kbps): Auto

Next Auto 64CC 64L

DSU Data Rate.

Data rate in kbps on the digital circuit. Sets the data rate of the DDS circuit interface. Auto is available to identify the line rate. When a weak quality or a poor signal exists, Device H/S messages appear on the front panel while the DSU continues to determine the data rate. Rate(Kbps) does not appear for EBrdg.

NOTE: Setting the actual data rate will result in maximum reliability and minimum power-up time. The actual data rate

is recommended over the Auto setting after installation. Control and tributary DSUs set to 64CC or 64L must be set to the same rate. When App Module ID displays XLOOP, the 19.2 kbps data rate results in a DDS network service of +6 dB.

Auto – DSU detects the data rate and displays the value in the H/S display front panel will display Device H/S messages. Once the data rate is detected, the Device H/S will display the data rate in place of Auto. To ensure proper line rates, configure the unit for the actual data rate. TxClkSource configuration option must be set to DDS or RXC in order to locate the data rate.

64CC – 64 kbps Clear Channel on a 72 kbps circuit.

64L – 64 kbps LADS operation.

56 to 2.4 – Selects a DSU data rate between 56 and 2.4 kbps. PrtSp(Kbps): 9.6

12.0

Port Speed.

9.6

56 48 38.4

9.2

Sets the speed of the DTE port interface. The port speed may be set to any value less than or equal to the

Rate(Kbps) configuration option value. If the value is set less than the DDS rate, the DSU performs rate adaption.

NOTE: When the Async→Sync configuration option is enabled, the following port speeds will not appear:

32, 24.0, 18.8, 18.0, 9.2, 8.4, 4.4, 4.0, and 2.0 kbps.

64 to 1.2 – Selects the DTE’s port speed. Disab – Sets the port speed to 0 (zero) bps.

56 38.4 19.2 9.6 4.8 2.4 Prev

. While attempting to detect the data rate, the

8.4 7.2 4.8 4.4 4.0 2.4

28.8 24.0

19.2 18.8 18.0 16.8

2.0 1.2 Disab Prev

14.4

TxClkSource: DDS Next Int RXC Ext Prt1 Prt2 Prt3 Prt4 Prt5 Prt6 DDS Prev

Transmit Clock Source. Specifies the transmit timing source for the DSU. Not valid with EBrdg.

Int – Internal clock source. Timing is provided by the DSU. RXC – Receive clock source. The DSU generates transmit timing from the receive data signal. This choice is provided

for LADS configurations and differs from the DDS selection when running tests.

– External clock source. The DSU is timed by the external Transmit Timing lead on Port 1 only.

Ext Prt1 to Prt6 – Selects Ports 1 through 6. The DSU is timed by the external Transmit Timing lead on the selected port. DDS – DDS Network. The DDS network is the timing source for the DSU.

If operating in MCMP mode (MUX Funct is set to MCMP), the Rate(Kbps) default setting is 56 kbps.

Port speed does not appear if TDM or MCMP hardware is installed. Instead, this entry is made in the DSU Port Speed Configuration Options for MCMP or TDM. Refer to Document No. 3610-A2-GB48.

In TDM and MCMP mode, the External clock source is replaced with Ports 1 – 6. Selecting a port number results in the TDM operating with timing provided by the DTE at the selected port (EIA-232 Pin 24 or V.35 Pins U and W).

For EBrdg mode in full Backup, timing is set using the Bridge Timing configuration option. Refer to Document No. 3610-A2-GB48.

4-2 December 1996 3610-A2-GB46-60

Page 47

Configuration Option Tables

Table 4-1

(2 of 3)

DSU Configuration Options

Msg Clamp: Enab Next Enab Disab Prev

Message Clamping. Controls the data leads when disruptive diagnostic tests and commands are received from the remote DSU. This configuration option applies to both the DSU and DBM.

When Disr Type is set to 3600e (see Table 4-2), as required for 64CC service, and Msg Clamp is set to Enab, the DSU sends the escape header portion of a diagnostic message to the DTE before detecting an escape header and invalid data. However, the DSU does clamp the ensuing command portion of the message.

Enab – Received Data (RXD) is held to MARK and LSD is turned Off during diagnostic exchanges. This prevents diagnostic messages from reaching the DTE interface.

Disab – DSU passes diagnostic messages to the DTE interface. Use the Disable setting if the remote DSU is configured for switched RTS (RTS Control set to DTE, Table 4-4).

TxElasStor: Disab Next Enab Disab Prev

Transmit Elastic Store. Serial data from the extended circuit is clocked into the DSU’s elastic store using a clock provided by the DTE’s receive clock lead. The DSU uses its own system timing to clock data out of the buffer.

Enab – Enable this configuration option if you have an extended network. Transmit Elastic Store resets upon power-up, overflow, or after the request-to-send lead makes an Off-to-ON transition. Use TxElasStor to minimize the effects of clocking differences from different sources.

Disab – Disable this configuration option if you do not have an extended network.

Elastic store hardware consists of a transmit buffer on the DSU’s transmitted data (TXD) lead.

RxElasStor: Disab Next Enab Disab Prev

Receive Elastic Store. Receive Elastic Store hardware consists of a receive buffer on the DSU’s received data (RXD) lead. The Receive Elastic Store configuration option is supported in single port DSUs configured for disruptive diagnostics.

Enab – Enable this configuration option if you have an extended network, and when interfacing to a DTE or DCE that provides its own clock source and supports the Transmit Elastic Store configuration option.

Disab – Disable this configuration option if you do not have an extended network.

19.2 PowrLvl: +6 Next +6 0 –10 Prev

19.2 kbps Power Level. Selects the appropriate power level, in decibels, for operation at 19.2 kbps. This configuration option appears when Rate(Kbps) is set to 19.2 kbps.

NOTE: When the App Module ID displays XLOOP, setting the Rate(Kbps) configuration option to 19.2 kbps filters this

configuration option and results in a DDS network service of +6 dB. Refer to Table 3-2 for ID descriptions.

+6 – For DDS network service. 0 – For alternate DDS service. –10 – For LADS operation.

In TDM or MCMP mode, the DSU’s Transmit Elastic Store settings are ignored; instead, this configuration option is selected on a per-port basis in the MUX Portn menu.

In Bridge mode with MUX Funct set to CBrdg, the Transmit Elastic Store configuration options for Port 1 are ignored (automatically disabled).

4-33610-A2-GB46-60 December 1996

Page 48

COMSPHERE 3600 Series Data Service Units

Table 4-1

(3 of 3)

DSU Configuration Options

64KScramblng: Off Next On Off Prev

64 kbps Scrambling. Controls the data scrambler used with 64 kbps Clear Channel operation. Data scrambling suppresses the possible simulation of network control codes by application data. This configuration option appears when Rate(Kbps) is set to 64CC, and must be the same at both the local and remote DSUs.

–

Enables data scrambling.

On Off – Disables data scrambling.

64KLatchLpbk: On Next On Off Prev

64 kbps Latching Loopback. Controls the DSU’s response to the network latching loopback sequence on 64 kbps Clear Channel operation. This configuration option appears when Rate(Kbps) is set to 64CC.

–

DSU responds to the network latching loopback command. ON is required for compliance with AT&T Technical

Reference 62310 – 1993.

Off – DSU ignores the network latching loopback command. NetIntf: Disab

Next AggSw Forc Disab Prev

Network Interface. When set to AggSw, the DSU bridges aggregate data over the alternate Port 1. If the DTE Port configuration option is set to EIA-232 (Table 4-4), the aggregate data is bridged to the V.35 interface. If the DTE Port configuration option is set to V.35, the aggregate data is bridged to the EIA-232 interface. Not valid with digital bridging.

AggSw – Enable for aggregate switch backup. When Answer External Dial Backup is disabled (Table 4-4), the DSR signal is sent to the external dial backup unit. Data can be sent over alternate Port 1 and the DDS line simultaneously. An installed DBM must be disabled to select this configuration option.

Forc – Forces Aggregate Switching to ON. When Answer External Dial Backup is enabled (T Port 1 is active and the DDS line is inactive.

Disab – Alternate Port 1 not in use. NetI Timing: NetI

Next Int NetI Prt1 Prt 2 Prt3 Prt4 Prt5 Prt6 Prev

Network Interface Switch Timing. If NetIntf is set to AggSw or Forc, this configuration option determines where timing is obtained. Not valid with EBrdg.

Int – Timing is generated internally by the DSU. NetI – Timing is taken from the network. Prt1 to Prt6 – Timing is taken from the port. Not available in MCMP mode. Ports 2 through 6 are available for TDM

mode, if installed.

V.54 Lpbk: Disab Next Enab Disab Prev

V.54 Loopback. Enables V.54 Loopback operation. This configuration option is supported for point-to-point configurations. The V.54 sequences are generated and detected on Port 1. Refer to the section in Chapter 3.

Enab – Enable if the DTE generates V.54 loopback sequences or if the 3600 Series DSU is communicating with a non-3600 Series DSU that supports V.54 signaling.

Disab – Disable if the DTE does not support V.54 signaling or other DSUs do not support V

able 4-4), the alternate

Remote Digital Loopback

.54 signaling.

4-4 December 1996 3610-A2-GB46-60

Page 49

Configuration Option Tables

Table 4-2

(1 of 2)

Diagnostic DSU Configuration Options

Diag Type: Disr Next NonD Disr Mixed None Prev

Diagnostic Type. Defines the diagnostic interaction between the control and tributary DSUs. All DSUs on the same circuit must be set the same.

NonD – Nondisruptive Diagnostics. An in-band secondary channel transport carries diagnostics data between the control and the tributary DSUs.

Disr – Disruptive Diagnostics. The same (primary) channel that carries user-transmitted data between the control and the tributary DSUs also carries diagnostic data. Select this mode for compatibility with earlier releases that use disruptive diagnostics. Valid for EBrdg.

Mixed – Mixed mode supports nondisruptive health and status updates. User-initiated commands are sent disruptively. Mixed should only be selected in single-port multipoint configurations; not valid for point-to-point, EBrdg, or MCMP.

None – No diagnostic communications with remote devices; only allows local diagnostics. 2nd Ch(bps): 400

Next 100 400 800 1200 1600 Prev

In-band Secondary Channel Diagnostic Speed in bps. Determines the DSU’s diagnostic speed when you select NonD (nondisruptive diagnostics) and no excess bandwidth is available for in-band diagnostics. This configuration option only appears when Diag Type is set to NonD.

For example:

– DSU port speed and DDS line speed are both set to 9.6 kbps (9600 bps) – Diagnostic Type entered is NonD with diagnostic speed set to 400 bps – Diagnostic speed of 400 is subtracted from the original 9600. In this example, the DSU port speed is

9.2 kbps (9200 bps). –

100 to 1600

If the DSU Rate(Kbps) equals the Port Speed, or the underspeed port speed and sum of the TDM ports is equal to the aggregate speed on the DSU, use the following diagnostic speeds:

DSU Rate or Valid Diagnostic

Aggregate Speed Speeds in bps

NOTE: When the TDM is operating at a line speed greater than 19.2 kbps or with a multipoint configuration,

Refer to the following list for valid diagnostic speeds.

1.2

2.0

2.4

4.0

4.8

7.2

8.4

9.6

12.0

14.4

16.8

18.0

19.2

28.8 32

38.4 48 56 64

100, 400 100, 400 100, 400, 800 100, 400, 800 100, 400, 800, 1200, 1600 100, 400, 800, 1200 100, 400, 1600 100, 400, 800, 1200, 1600 100, 400, 800, 1200 100, 400, 800, 1200, 1600 100, 400, 800, 1200 100, 400, 1200 100, 400, 800, 1200, 1600 100, 400, 800 100, 400, 800, 1600 100, 400, 800, 1200, 1600 100, 400, 800, 1200, 1600 100, 400, 800, 1600 100, 400, 800, 1600

100 bps is not a valid in-band secondary channel transport rate. TDM uses 10 bps of the DSU port bandwidth for in-band framing and diagnostics.

4-53610-A2-GB46-60 December 1996

Page 50

COMSPHERE 3600 Series Data Service Units

Table 4-2

(2 of 2)

Diagnostic DSU Configuration Options

Disr Type: 3600e Next 2500 2600 3600s 3600e Br56 Prev

Disruptive Diagnostic Type. Defines the diagnostic interaction between the control and tributary DSUs. It must be set consistently for all DSUs on the same circuit when Diag Type is set to Disr, NonD, or Mixed. Regardless of the diagnostic type enabled, aggregate tests are still sent disruptively.

NOTE: If the DSU Rate(Kbps) is set to 64CC, the DSU defaults to Disr Type 3600e and no other configuration options

2500 – Only for point-to-point circuits when the control is either a 2500 or 3500 Series DSU, or the tributary is a

2500 Series DSU. Digital Loopback and Digital Test commands are sent using the 2500 signaling. All other remote commands use 2600 signaling. When 2500 is selected and AutoRestor is enabled, RespondRDL (Table 4-4) must be enabled for automatic restoration to work.

2600 – Used in mixed networks when the control is a 2600 Series DSU and the tributaries are 2600/3500/3600 Series DSUs, or when the control is a 3600 Series DSU and at least one tributary is a 2600 or 3500 Series DSU. This selection is not available for digital DBMs.

3600s

between control and tributary DSUs. It utilizes Switched CMI/DMI mode (control mode idle/data mode idle) signaling to ensure protocol independence with primary data and to trap diagnostic messages in DSUs. It is recommended that this mode be used when the control and tributary DSUs are configured for RTS Cntrl: FrcOn (Table 4-4). Switched-carrier operation can be supported; Msg Clamp (Table 4-1) must be disabled. This selection is host protocol independent, but not as fast as 3600e described below. This selection is not available for digital DBMs.

3600e – An alternate diagnostic protocol for circuits containing only 3600 Series DSUs. It is the diagnostic type protocol used on 64 kbps CC and backup PSTN links. This configuration option performs full 3600 diagnostics between control and tributary DSUs. An escape mode signaling (special data pattern) is utilized for minimum disruptive effect, or when the network does not support CMI network codes.

Br56 – Required for aggregate switching and digital bridge configurations when a Switched 56 DBM or ISDN DBM is installed.

will appear for this configuration option set.

– Used in circuits containing only 3600 Series DSUs. This configuration option performs full 3600 diagnostics

Do not use 3600s if you have a point-to-point tributary with disruptive diagnostics, no rate adaption, and RTS configured with DTE.

4-6 December 1996 3610-A2-GB46-60

Page 51

Configuration Option Tables

Table 4-3

(1 of 3)

Diagnostic General Configuration Options

Position: Trib Next Cntrl Trib G2Trb Prev

Network Position. Determines the DSU’s position in the network, and defines its test and diagnostic capabilities. In Bridge mode, the only value available is Cntrl.

Cntrl – Control. Digital bridge must be set to Cntrl. Trib – Tributary. G2Trb – This selection appears only in a DPII protocol mode. In a DATAPHONE II network, configure the outbound

tributary as a G2Trb and have one DSU on its poll list. Configure other tributaries as Trib.

LinkConfig: Pt-Pt Next Pt-Pt M-Pt Prev

Link Configuration. Determines a point-to-point or multipoint circuit. This configuration option is required for proper operation, testing, dial backup procedures, and nondisruptive diagnostics.

NOTE: For a DSU loaded from FacB, or a DSU with MCMP installed and loaded from FacT or FacC, the default is

Pt-Pt – Point-to-point configuration. M-Pt

Resp Period: 1 Next 1 2 10 Prev

Response Period. Determines how frequently the DSU sends health and status information. This applies to RTS/CTS Delay diagnostics, which is used for single-port multipoint configuration if the Diagnostic Type configuration option is set to NonD or Mixed (Table 4-2). Although this configuration option determines how often the health and status message is transmitted, an extended RTS/CTS delay occurs each time the DTE raises or lowers RTS. Applicable to tributary DSUs and DBMs only.

1 – Tributary DSU responds with health and status information each time the DTE raises RTS. 2 – Tributary DSU responds with health and status information every other time the DTE raises RTS. 10

TribTimOut: 0:10 Next Chang Prev

Tributary Time-out. The time (in minutes and seconds) that a DSU waits for a tributary health and status report before generating a T for single-port multipoint configurations when the Diagnostic Type is set to NonD or Mixed (Table 4-2).

Chang – Set this configuration option to greater than or equal to the maximum amount of time it takes for the front-end processor (FEP) to complete its polling cycle on that circuit, multiplied by the value entered in Resp Period.

Diag Conn: CC Next CC DC Prev

Diagnostic Connection. Set this value to match the connection set up for the 3600 Hubbing Device connected to this DSU. Refer to the Model 3610 DSU configured as a control.

CC – Control Channel. Set Control Channel for CC IN/DC OUT connection as the first link an NMS. DC – Diagnostic Channel. Set Diagnostic Channel for CC OUT/DC IN connections from the remaining tributaries.

M-Pt (multipoint).

– Multipoint configuration.

–

Tributary DSU responds with health and status information every tenth time the DTE raises RTS.

ributary Time-out alarm. This setting can be from 5 seconds to 10 minutes. Use this configuration option

Network Diagnostic Connection

section in Chapter 2. This configuration option is only available for a

4-73610-A2-GB46-60 December 1996

Page 52

COMSPHERE 3600 Series Data Service Units

Table 4-3

(2 of 3)

Diagnostic General Configuration Options

Link Delay: 0s Next 0s 1s 2s 5s 10s 20s 50s Prev

Link Delay. Controls the additional time in seconds that a DSU or DBM waits for a response from a device one level downstream. This configuration option does not appear for a multipoint single port device.

NOTE: This configuration option only appears when Diag Type is

set to NonD (Table 4-2).

If diagnostic time-outs are occurring during polling or DATAPHONE commands, increase the link delay to the next higher value.

0s to 50s – Sets the number of seconds the DSU or DBM waits for a downstream device response. Network Delay: 0s

Next 0s 1s 2s 5s 10s 20s 50s Prev

Network Delay. Controls the additional time in seconds that a DSU or DBM waits for a response from a multilink channel. The amount of delay should be set to at least 1 second if the downstream link is MCMP. Increase the network delay when:

• Receiving timeouts from an NMS

• Fast Select configuration option is disabled

• A tributary is two or more units downstream from the control unit

NOTE: This configuration option only appears when Diag Type is

protocol mode is set to ADp.

0s to 50s – Sets the time the DSU or DBM waits for a multilink channel response.

set to NonD (Table 4-2) and only applies when the

Packet Delay: 0s Next 0s 1s 2s 5s Prev

Packet Delay. Controls the time in seconds that a DSU or DBM waits for a packet to complete from an NMS. This configuration option only appears for a DSU configured as a control.

NOTE: Must be used when the Model 3600 DSU’s diagnostic channel operates over packet switch, satellite

communications, or other facilities that provide extended throughput delays.

0s to 5s – Sets the time the DSU or DBM waits for an NMS to complete its command. Extend Chan: No

Next Yes No Prev

Extend Main Channel.

For an extended network, specifies whether there is main channel connectivity between the DTE port of the tributary DSU and the DTE port of the extended control DSU. If set to Yes, DSUs send Test mode conditions across multiple links. Test mode is not sent over a circuit configured for disruptive diagnostics.

Yes – Set this configuration option to Yes to extend main channel connectivity between the DTE ports of the tributary and extended DSU in an extended network. A tributary DSU sends Test mode conditions downstream, and a control DSU receives/accepts the Test mode condition.

No – Set this configuration option to No if you do not have an extended network. A control DSU does not receive/accept the Test mode condition; the condition is ignored.

When in MCMP or TDM mode, using a multipoint single-port device, or Diag Type is set to Disr or None, this configuration option does not appear. Instead, it is displayed in the MUX Port configuration options under Port 1. Ports 2 – 6 must be set independently. See Document No. 3610-A2-GB48 for MUX Configuration Options.

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Configuration Option Tables

Table 4-3

(3 of 3)

Diagnostic General Configuration Options

Upstrm Port:Prt1 Next Prt1 Prt2 Prt3 Prt4 Prt5 Prt6 Prev

Upstream Port.

If an extended control DSU has its DTE interface connected to the tributary DSU or APL modem and the configuration option Extend Chan is set to Yes, set this configuration option to the upstream port number. Select Prt1 if the tributary DSU is operating in single-port mode. This configuration option has an effect only if Diag Type is set to NonD.

Prt1 to Prt6 – Selects the upstream port number. M-PtSymPrt:Disab

Next Enab Disab Prev

Multipoint Symmetrical Port. This configuration option enables rate adaption in the tributary DSU to control direction on a multipoint circuit. This configuration option will not appear for a point-to-point circuit or when operating in MCMP mode.

Enable this configuration option:

• When performing multipoint rate adaption (e.g., the port speed is less than the line speed), or

• If the transmit data rate is required to match the receive data rate for single-port multipoint nondisruptive

diagnostics

This is generally the case in extended circuit applications and in multipoint applications where the tributary DSU is configured as a digital-sharing device.

NOTE: Enable this configuration option for the control DSU and the tributaries; the control DSU and tributaries must be

Enab – Enable this configuration option when performing multipoint rate adaption or when a multipoint network is

configured for nondisruptive diagnostics and a symmetric port speed is required for proper DTE operation. Disab – Disables multipoint rate adaption on data from the tributary to the control DSU (asymmetrical).

set the same.

Fast Sel: Enab Next Enab Disab Prev

Fast Select. Fast Select is a technique used by ADp protocol or the 6700 or 6800 Series NMS. When enabled, the DSU transfers a message to a downstream device in a character-by-character format. When disabled, the DSU transfers the message to the downstream device in packet or block format. The 3800 Series Dial Modem does not support Fast Select; therefore, you must disable Fast Select in all 3600 Series DSUs between an NMS and a 3800 Series Dial Modem on an extended circuit.

This configuration option does not appear if the DSU is a multipoint single-port device, if the protocol used is DPII, or if Diag Type is set to Disr or None.

Enab – Enables the Fast Select feature. Disab – Disables the Fast Select feature. When disabled, all devices on the same level of the circuit must be disabled.

When in MCMP or TDM mode, this configuration option does not appear. Instead, it is displayed in the DSU Port Speed configuration options for MCMP or TDM under Port 1. Ports 2 – 6 must be set independently.

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COMSPHERE 3600 Series Data Service Units

Table 4-4

(1 of 6)

General Configuration Options

DTE Port: EIA232 Next EIA232 V.35 Prev

DTE Port. Selects the active DTE interface. The other port is the alternate Port 1. Refer to the AnswExtBU configuration option in this table and NetIntf configuration option (Table 4-1).

EIA232 – The EIA-232 connector is typically used for data rates up to 19.2 kbps. Operation at speeds up to 64 kbps is dependent upon cable length, cable quality, and the local environment. Connector type should match the DTE.

V.35 – For all available rates at distances up to 1000 feet. RTS Cntrl: DTE

Next FrcOn DTE Prev

Request-to-Send Control. If set to FrcOn, the DSU is always in data mode and never sends control mode idle (CMI) as the RTS lead is forced ON. If set to DTE, the DSU sends CMI whenever RTS is Off, and data mode idle (DMI) when RTS is ON.

This configuration is forced ON internally for point-to-point configurations with nondisruptive diagnostics or rate adaption. Set this configuration option to DTE for multipoint tributaries performing nondisruptive or mixed diagnostics, rate

adaption, or when configuration option M-PtSymPrt is enabled.

–

FrcOn

Control DSUs with LPDA-2 enabled must have RTS Cntrl forced ON and CTS Cntrl set to =RTS.

DTE – DSU responds to RTS from the DTE. Does not appear for CBrdg or EBrdg. CTS Cntrl: Std

Next Std =RTS Prev

Clear-to-Send Control. Controls the CTS lead when RTS is received. Std – Standard. CTS follows RTS with a delay. CTS is normally controlled by the DTE’s RTS lead. However, the CTS

lead can be affected by the response to abnormal conditions such as no signal or test mode, as determined by the following configuration option settings in this table: RTS Cntrl, CTS Lead, and Circ Assur.

=RTS – Request-to-Send. CTS follows RTS with no delay. This configuration option is required for a control DSU with LPDA enabled and RTS Cntrl set to FrcOn, or a tributary DSU with LPDA enabled when in an FEP-to-FEP configuration. In point-to-point configurations where LPDA is disabled and RTS Cntrl is forced ON, CTS Cntrl can also be forced ON if the DTE interfaces require no delay between RTS Cntrl and CTS Cntrl (0 ms), but RTS Cntrl does not require an RTS-to-CTS transition. If MUX Funct is set to TDM, MCMP, EBrdg, or CBrdg, CTS will not be affected by network alarms.

AntiStream:Disab Next Chang Disab Prev

AntiStreaming. Antistreaming provides circuit protection against a streaming DTE by clamping the RTS lead of the tributary DSU. A streaming DTE has its RTS lead constantly turned ON.

In TDM or MCMP mode, the AntiStream configuration option is not displayed; rather, you select these configuration options on a per-port basis in the MUX submenu.

If the tributary DTE turns ON RTS longer than the time specified for the AntiStreaming configuration option, the tributary DSU turns on its alarm indicator and clamps RTS to Off. Although the tributary DTE is not allowed to send, the DSU can still respond to commands and is capable of being tested or disabled.

Upon detecting that RTS is no longer turned ON, the DSU turns off its alarm, resets the streaming timer, and allows the DTE to send data.

This configuration option only applies to a DSU configured with RTS Control set to DTE and is disabled when RTS Control is set to FrcOn.

Chang – Set timer to any value from 1 to 100 second(s) in increments of 1. Disab – Sets timer to Disab. When you select Disab, streaming terminal detection is not provided. For async terminal,

enter 0 (zero) for Disable.

Forced On. Keeps the RTS ON continuously, regardless of whether RTS at the DTE interface is ON or Off.

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Configuration Option Tables

Table 4-4

(2 of 6)

General Configuration Options

LSD Lead: Std Next Std Delay FrcOn Prev

Line Signal Detect Lead. Controls behavior of the Line Signal Detect lead.

Std – LSD lead goes Off in response to a control mode idle (CMI) signal from the DDS network or DDS failure. Delay – LSD does not go Off in response to a network alarm condition or CMI. LSD goes Off only after repeated call

attempts fail and the Tries Time-out configuration option expires. Enable Auto Bckup to use this selection (refer to the Backup Configuration Option Table in Document No. 3610-A2-GB49).

–

FrcOn CTS Lead: Std

Next Std Delay FrcOn Prev

Clear-to-Send Lead. Controls the Clear-to-Send lead. Appears when CTS Cntrl configuration option is set to Std. The Std and Delay selections are ignored if RTS Control is set to DTE, CTS Control is set to =RTS, or Circuit Assurance

is enabled.

Std – CTS is determined by the combination of the RTS Control and CTS Control configuration options in this table. Delay

attempts fail, the Tries Time-out configuration option expires, and the call is dropped. Enable Auto Bckup to use this selection (refer to the Backup Configuration Option Table in Document No. 3610-A2-GB49).

FrcOn

Forced On. Keeps LSD on as long as the DSU has power.

– CTS does not go Off in response to a network alarm condition or CMI. CTS goes Off only after repeated call

–

Forced On. Keeps CTS on as long as the DSU has power.

DSR FrcOn: Enab Next Enab Disab Prev

Data Set Ready Forced On. Provides the ability to override any other options controlling the Data Set Ready lead. In MCMP, TDM, CBrdg, or EBrdg mode, the DSR FrcOn and DSR on Test configuration options are not displayed.

Select these configuration options on a per-port basis from the MUX submenu.

Enab – DSR remains ON as long as the device is working regardless of tests and network alarms. Disab – DSR functions as an active lead reflecting various test and alarm conditions and other options.

SystemStat: Enab Next Enab Disab Prev

System Status. Controls the behavior of the DSR lead in response to a No Signal, Out-of-Service, or Out-of-Frame alarm from the network.

Enab – Network alarm turns Off DSR. Disab – Network alarm does not affect DSR. For a DBM-D, DBM-I, DBM-S, or DBM-V, network interface aggregate

switching, or when the DSU is in Bridge mode, this configuration option should be set to Disab.

DSR on Tst: Enab Next Enab Disab Prev

Data Set Ready On in Test. Controls the behavior of the DSR lead during testing. In MCMP, TDM, CBrdg, or EBrdg mode, the DSR FrcOn and DSR on Test configuration options are not displayed.

Select these configuration options on a per-port basis from the MUX submenu. Enab – DSR is ON continuously during testing, allowing a DTE that relies on DSR being ON to send test messages to

the DSU. Disab – DSR is Off during testing.

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COMSPHERE 3600 Series Data Service Units

Table 4-4

(3 of 6)

General Configuration Options

Circ Assur:Disab Next Enab Disab Prev

Circuit Assurance. Controls the CTS lead in response to a data signal from the network. This configuration option is ignored if rate adaption in ef enabled, Diag Type should not be set to NonD (T

A DDS Facility Alarm condition turns Off the CTS lead, regardless of the Circuit Assurance setting.

Enab – The DSU turns Off the CTS lead if the DSU receives control mode idle (CMI) from the network. Disab – The CTS lead is not affected by the receipt of CMI.

Tst Pattern: Std Next AT&T Std Prev

Test Pattern. Selects the test pattern generator and comparator used by the DSU in disruptive testing. This configuration option only applies to aggregate tests.

AT&T – Must be selected by a 3600 Series DSU when exchanging test patterns with 2500, 2600, and 3500 Series DSUs.

Std – The ITU standard 511-bit pattern; used with external test equipment. RespondRDL: Disab

Next Enab Disab Prev

Respond to Remote Digital Loopback. Determines whether the DSU responds to a 2500 or V.54 Remote Loopback request. Refer to the

Enab – Performs a Digital Loopback. Disab – Ignores the Loopback command.

fect or RTS Cntrl is set to ON at other end. Used for single-port applications only. When

Loopbacks

section in Chapter 3.

able 4-2) and rate adaption should not be in ef

fect.

LL by DTE: Disab Next Enab Disab Prev

Local Loopback by DTE. Whenever this lead is ON, the Local Loopback overrides any other diagnostic tests run by the network. Refer to the

Enab – The DTE forces the DSU into Local Loopback when the signal on Pin 18 of the EIA-232-D/V.24 interface or Pin L of the V.35 interface is turned ON. Local Loopback ends when the signal is dropped.

Disab – The DTE will not initiate Local Loopback in response to the signal. RL by DTE: Disab

Next Enab Disab Prev

Remote Digital Loopback by DTE. For this configuration option, Link Configuration must be set to Pt-Pt (Table 4-3). Refer to the

Enab – The DTE forces the DSU to request a Remote Digital Loopback when the signal on Pin 21 of the EIA-232-D/V.24 interface or Pin N of the V.35 interface is turned ON. Remote Digital Loopback ends when the signal is dropped.

Disab – The DTE cannot initiate Remote Digital Loopback. Bilat Lpbk: Disab

Next Enab Disab Prev

Bilateral Loopback. If this configuration option is enabled, a DTE Loopback occurs when a Digital Loopback occurs. Refer to the

Enab – When enabled, a Digital Loopback causes a DTE Loopback. Disab – Disables Bilateral Loopback.

Loopbacks

section in Chapter 3.

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Configuration Option Tables

Table 4-4

(4 of 6)

General Configuration Options

Ext Leads: Rate Next ExtLd Rate RPowr Prev

External Leads. Controls the use of the general-purpose leads on the EIA-232-D/V.24 interface for Port 1 except when Rate is selected. These leads can be controlled and monitored from the front panel, an async terminal, or a 6700 or 6800 Series NMS.

ExtLd – Enables Pins 12 and 13 as output (control) and Pins 19 and 23 as input (alarm) leads. When enabled, Pins 12 and 13 output +12V when ON and –12V when Off. Pins 19 and 23 recognize voltages from +2.2V to +12V as ON (reported as an External alarm) and –12V to +.8V as Off.

Rate – If the TDM or MCMP option is installed, use Pin 12 on each port to control speed selection and make an extended modem change speed to match the backup port speed. Pin 12 on all ports turns Off at the same time to indicate that the TDM is in fallback. If a port does not fall back and remain at the same speed, then the fallback feature in the DCE connected to that port should not be enabled.

RPowr – Functions similarly to ExtLd, but the inputs report power failure or fan alarms when a redundant power supply is installed in the COMSPHERE 3000 Series Carrier.

CCN by EL: Disab Next Enab Disab Prev

Configuration Change Notification by External Leads. Controls the use of the general-purpose output leads to set an CCN event. This configuration option only has an effect if Ext Leads is set to ExtLd and the protocol is ADp.

Enab – Change in state of a general-purpose lead signals CCN to the NMS. Disab – General-purpose lead changes do not set a CCN event.

DTR Alarm: Disab Next Enab Disab Prev

Data Terminal Ready Alarm. Causes the DSU to generate an alarm if DTR is Off for more than 30 seconds. The front panel or async terminal displays DTR Alarm and reports it to the NMS. Does not appear for TDM or MCMP mode.

Enab – If DTR lead turns Off for 30 seconds, the DSU generates an alarm. Disab – No alarm is generated when DTR lead is Off.

SW Vers: Normal Next 3.24 4.43 6.66 Normal Prev

Software Version of the DSU. Forces the DSU’s software/firmware version to be reported to the NMS through the Identity (ID) command in the DSU SW vers field. This configuration option supports NMS compatibility for a tributary DSU with a control DSU with an older software version. It applies when Diag Type is set to Disr (Table 4-2) or when a multipoint DSU configured for Mixed or NonD diagnostics is not operating in MCMP mode.

When the control DSU’s software version is 7.25 or greater, it will be compatible with any tributary 3600 Series DSU, regardless of its software version. To ensure optimal functioning of the DSU, both the control and tributary DSU’s SW Vers configuration option must be set to Normal, and the tributary DSU’s set to Normal or No.

NOTE: Refer to Firmware Version Control, Table G-1.

If the control DSU’s software version is less than 7.25, the following configuration option changes need to be made:

3.24 – Set 3.24 for a tributary DSU when the control DSU’s software version is 3.13 or less, and the tributary DSU’s software version is 5.15 or greater. No setting change is required for the control DSU; the DSU SW Vers configuration option is not available to the control.

4.43 – Set 4.43 for the tributary DSU when the control DSU’s software version is 4.25 or 4.28 and the tributary DSU’s software version is 5.15 or greater. For the control DSU, set the 3.20 DSU SW Vers (the name of the configuration option in an older firmware version) configuration option to No.

6.66

– Set 6.66 for the tributary DSU when the control DSU’s software version is 6.xx or greater and the tributary DSU’s

software version is 8.xx or greater. Normal – Select Normal for both the tributary and control when both DSU software versions are 7.25 or greater.

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COMSPHERE 3600 Series Data Service Units

Table 4-4

(5 of 6)

General Configuration Options

AnswExtBU: Disab Next Enab Disab Prev

Answer External Dial Backup. This configuration option is an aggregate switch on-demand feature that allows dial backup for a point-to-point 3600 Series DSU using an External dial backup unit (DBU). The 3600 Series DSU is forced to switch the aggregate data to the alternate DTE connector which is an interface connected to the aggregate data path rather than to the DTE (alternate Port 1, either the V.35 or EIA-232 interface). Control of the aggregate switch can be automated in several ways.

When the remote site is to initiate a dial backup session, enable AnswExtBU. With this type of automated control, the DSU monitors the data terminal ready (DTR) lead on the aggregate port. When the External DBU has established a call and has turned ON the data set ready (DSR) lead, the DSU switches the aggregate data from the DDS line to the aggregate port via a crossover cable between the External DBU and the DSU. When the External DBU drops the call and the DTR signal turns Off, the DSU switches the aggregate data back to the DDS line. Note that when you select enable, the front panel Backup (Bkup) and Drop Backup (DrBU) and NMS Standby Facility commands are ignored.

When a dial backup session is initiated at the local site, disable AnswExtBU so that the DSU controls the DSR lead on the aggregate port. By selecting the Backup command from the front panel (Bkup) or Standby Facility command from the NMS, data is routed from the External DSR signal turns ON, which then turns on the DTR signal at the External DBU. If configured for DTR call-control, the External Standby Facility command is issued. This turns the DSR signal Of configured correctly, the DBU drops the dial connection.

NOTE: If an Internal DBM is installed and active or NetIntf is not set to AggSw (Table 4-1), this configuration option will

Enab – Activates the DSU to automatically switch the aggregate data stream to the alternate Port 1 when the DTR

signal turns ON. The DSU configuration option NetIntf must be set to AggSw. Disab – Allows the local DSU to control the call initiation and disconnect on an external

or the NMS. The DSU configuration option NetIntf must be set to Forc (Table 4-1).

RLSD in MCMP: No Next Yes No Prev

Receive Line Signal Detector in Multichannel Multipoint. Defines whether switched RLSD is required for shared backup with MCMP to support RLSD detection. This configuration option only appears when an ISDN or Switched 56 DBM is installed.

Yes – Switched RLSD is required. No – Switched RLSD is not required.

DBU places the call. Data switches back to the DDS line when the front panel Drop Backup (DrBU) or NMS

not appear

DBU through the network interface (NetIntf) switch to the DTE. As a result, the

f on the alternate Port 1 and, if the External DBU is

DBU via the DSU’s front panel

Async→Sync: Disab Next Enab Disab Prev

Asynchronous-to-Synchronous Conversion. Sets Port 1 of the DSU DTE interface for asynchronous or synchronous operation. This configuration option only appears when the Single-Port Async/Sync feature is installed (App Modul ID displays ASPEN or SEQU).

Enab – Configures Port 1 as asynchronous (asynchronous-to-synchronous conversion takes place). Disab – Configures Port 1 as synchronous.

AsyncBit/Char: 8 Next 6 7 8 9 10 Prev

Asynchronous Bits per Character. Specifies the length of a character, including the parity bit but excluding the start and stop bits. This configuration option only appears when the Single-Port Async/Sync feature is installed and the Async→Sync configuration option is enabled.

6 to 10 – Selects the asynchronous bits per character. When Stop Bits is set to 2, 10 will not appear.

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Configuration Option Tables

Table 4-4

(6 of 6)

General Configuration Options

Stop Bits: 1 Next 1 2 Prev

Stop Bits. Specifies the number of stop bits in an asynchronous character. This configuration option only appears when the Single-Port Async/Sync feature is installed and the Async→Sync configuration option is enabled.

1 to 2 – Selects the number of stop bits to be used. When the AsyncBit/Char configuration option is set to 10, 2 will not appear.

Overspeed: 2.3 Next 1.0 2.3 Prev

Overspeed. Selects the overspeed percentage of the asynchronous-to-synchronous converter. This configuration option only appears when the Single-Port Async/Sync feature is installed and the Async→Sync configuration option is enabled.

1.0

– Selects the basic overspeed range. Basic range provides 1.0% overspeed in the DTE asynchronous data rate.

2.3

– Selects the overspeed percentage for extended range. Extended range provides 2.3% overspeed in the DTE

asynchronous data rate.

PowerOnTst: Enab Next Enab Disab Prev

Power On Test. This configuration option affects the power-up routine and Reset initiated from the Control branch. Enab – Any installed DSU, DBM, and MUX performs all device tests during the initial power-up routine or when selecting

Reset from the Control branch. Disab – The power-up routine and Reset will bypass lamp and device tests. Major device errors from communication

failures may result in a DDS, DBM, or MUX facility alarm.

Table 4-5

(1 of 2)

LPDA-2 Configuration Options

LPDA-2: Disab Next Enab Disab Prev

LPDA-2 Operation. Allows the DSU to respond to LPDA-2 commands issued from NetView. This configuration option must be enabled at the control DSU and each tributary DSU for SNA Diagnostic Interface operation.

When a disruptive test is running at the control DSU, the FEP reports Test in Progress to the NetView operator when the operator issues an LPDA-2 command. If the Test Mode (TM) switch S1-3 or S1-4 is disabled at the control DSU, the control DSU may respond to an LPDA-2 command while running a test initiated by an NMS or front panel. The LPDA-2 command cannot propagate any farther than the control. If the control DSU is performing a Device Test or an End-to-End test, it ignores any NetView-initiated command.

Enab – The 3600 Series DSU responds to LPDA-2 commands. When enabled, it is recommended that DSR FrcOn be set to Enab and CTS Cntrl set to RTS.

Disab – The 3600 Series DSU does not respond to LPDA-2 commands.

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COMSPHERE 3600 Series Data Service Units

Table 4-5

(2 of 2)

LPDA-2 Configuration Options

LPDA Address: 001 Next Chang Prev

LPDA Address. Used to set the LPDA-2 address used by NetView. Choices are 1 through 255, in decimal. The following rules apply to control DSU address assignment:

1. Link Segment Level 1 (Primary Circuit). The control DSU closest to the NetView host is typically assigned the

address 1.

2. Link Segment Level 2 (Extended Circuit) The following rules apply to tributary DSU address assignment:

1. Valid Addresses: Tributary DSUs range from 1 to 255.

2. Single DTE: The tributary DSU address is set to the Physical Unit (PU) address of the attached terminal device;

required by NetView.

3. Extended Circuit: For configurations having extended circuits, the tributary DSU in the primary circuit is set to 253.

Address 253 (FD hex) is the broadcast LPDA-2 address.

SNA Backup:Disab Next Enab Disab Prev

SNA Backup. Allows the DSU to respond to the NetView commands for establishing and dropping a dial backup command (Call Out and Disconnect). When the SNA Backup configuration option is disabled, backup can still be controlled from a 6700 or 6800 NMS; SNA Backup only needs to be enabled at the control DSU. For extended circuit configurations, the extended circuit link can also be configured to respond to the NetView dial backup command by turning on SNA Backup at the extended control DSU. This feature is not supported in multipoint configurations.

Enab – The 3600 Series DSU control responds to the NetView dial backup command. Disab – The 3600 Series DSU control sends a Request Not Supported by DCE message to NetView upon receiving a

dial backup command.

Code 1: 582210 Next Chang Prev

Code 1. Determines the DSU type and model reported to NetView for the DSU/CSU and Line Status test and Transmit/Receive Test standalone 3610 DSU emulates for LPDA-2 monitoring. This value can be changed, but NetView may report an error if the value is not a known IBM model number.

NOTE: The default value for the carrier-mounted 3611 DSU is 582218.

Code 2: 5822101 Next Chang Prev

Code 2. Determines the DSU type and model reported for the Call Out and the Disconnect commands. This configuration option is normally set to the same value as Code 1. The last digit in the configuration option is used to tell NetView that the DSU is either calling itself a DSU (1) or an APL modem (0) when responding to a NetView Dial Backup command. It is needed because the NetView dial backup commands are meant for APL devices and a particular release of NetView may not expect a DSU device to respond to an APL specific command.

NOTE: The default value for the carrier-mounted 3611 DSU is 5822181.

commands. The default values are the type (5822) and model (10) of the IBM 5822, which the

The extended control DSU is typically assigned the address 2.

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Data Service Unit Menu

DSU Menu Tree A-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Top-Level Menu A-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Factory Default Settings A-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

DSU Menu Tree

The menu tree and DSU configuration options are presented on the next two pages. Configuration options appear or are filtered based on settings in effect and additional installed hardware features.

Top-Level Menu

The

DSU operation is presented as menu selections

that branch downward from the top-level of the menu tree.

Factory Default Settings

Table A-1 presents all DSU factory default configuration settings. Refer to Chapter 4 for details regarding DSU configuration options.

For additional factory default configuration settings, refer to Document No.:

• 3610-A2-GB48 for TDM, MCMP, and digital

bridging

• 3610-A2-GB49 for DBMs

A-13610-A2-GB46-60 December 1996

Page 62

COMSPHERE 3600 Series Data Service Units

TOP-LEVEL MENU

Local Remot

Address

Stat Bckup Test

H/S DTE CircQ ID TPwr

Port

Select

Devic Expan Subn

Abort Bkup Dial DrBU Disc →Dial →DDS AggSw

NOTE

For additional details, refer to Chapter 4,

Configuration Option Tables

Appendix B,

DSU Configuration

, and

Worksheet.

Msgs

Read Clear

DSU DBM

Abort Devic Lpbk Lamp

Subn Selective

→Net

LL DTE

Port

Select

DL RL

Port

Select

Port

Select

Address

EE Start Start Start Port

Select

Address Address

Run

# Blocks

Tim

Displ Clr

BERT

Port

Select

DTon

496-14331a-04

ABBREVIATIONS

→ DDS → Dial

Acq Acquire Devic Device ExtL External Leads NetI Network Interface Addr Address Diag Diagnostic FacB Factory Bridge Opts Configuration Options ADp Advanced Diagnostic protocol Dir Directory FacC Factory Control PList Poll List AggSw Aggregate Switch Disab Disable FacT Factory Tributary PrtSp Port Speed Bckup Backup Disc Disconnect FB1 Fallback 1 Pswrd Password BERT Bit Error Rate Test Displ Display Gen General Remot Remote Mode CBrdg Central-Site Bridge DL Digital Loopback H/S Health and Status Remt Remote Chan Channel to Port DPII DATAPHONE II ID Identity RL Remote Digital Loopback ChgMd Change Mode DrBU Drop Backup LEDs Light Emitting Diodes SPID Service Profile Identifier CID Customer Identifier DSU Data Service Unit LL Local Loopback Subn Subnetwork Health and Status CircQ Circuit Quality DT Digital Test Lpbk Loopback TDM Time Division Multiplexer Clr Clear DTE Data Terminal Equipment LPDA Link Problem Determination Aid Term Async Terminal Confg Configure DTone Dial Tone MCMP Multichannel Multipoint TPwr Terminal Power Ctrl Control EE End-to-End Test Msgs Messages TxCtl Transmitter Control

Switch to DDS Path DDD Direct Distance Dialing Enab Enable MPTT Multipoint Tributary Switch to DDD Path DDS Digital Data Service Expan Expanded Health and Service MUX Multiplexer

DBM Dial Backup Module EBrdg Extended Bridge MPTC Multipoint Control

A-2 December 1996 3610-A2-GB46-60

Page 63

Data Service Unit Menu

Confg

Opts PList Addr ChgMd

Displ Chang

Clr

Activ Delet

Load

Activ Usr1

Activ Usr1 Usr2 Usr3

Remt

Address

Add

Skip

Acq

Chang Clr

Usr3

Usr2

Dir Phone

Chang Clr

FacT

FacC

Chang Clr

FacB

Save DPII ADp

Enab Disab Pswrd CID

Pswrd

MPTC

MPTT

Term

Chang Clr

DSU DBM Ports

MenuSPID

Save Enab Disab

TxCtl LEDs ExtL

Enab Disab

Devic

Ctrl

Reset

Displ Chang

Port Select

SAVE DSU DBM Gen Bkup MUX LPDA

Remt Usr1 Usr2 Usr3

Activ

Address

Activ Usr1 Usr2 Usr3

Diag

DSU DBM Gen Chan

Prt1 Prt2 Prt3 Prt4 Prt5 Prt6

PrtSp

DSU DBM

Copy Setup Prt1 Prt2 Prt3 Prt4 Prt5 Prt6

Copy From

TDM MCMP

Copy

All Prt1 Prt2 Prt3 Prt4 Prt5 Prt6

CBrdg EBrdg None

FB1

496-14331b-0

A-33610-A2-GB46-60 December 1996

Page 64

COMSPHERE 3600 Series Data Service Units

Factory Default DSU Configuration Option Settings

Table A-1

(1 of 2)

DSU

Rate(Kbps) Auto* Auto* Auto Auto* Auto* PrtSp(Kbps) 9.6 kbps 9.6 kbps 9.6 kbps 9.6 kbps 9.6 kbps TxClockSource DDS DDS DDS DDS DDS Message Clamp Enable Enable Enable Enable Enable TxElasticStore Disable Disable Disable Disable Disable RxElasticStore Disable Disable Disable Disable Disable

19.2 PowerLevel +6 +6 +6 +6 +6 64KScrambling Off Off Off Off Off 64KLatchLoopback On On On On On Network Interface Disable Disable Disable Disable Disable Network Int. Timing NetI NetI NetI NetI NetI V.54 LoopBack Disable Disable Disable Disable Disable

Diag DSU FacC FacT FacB MPTC MPTT

Diagnostic Type Disruptive Disruptive Disruptive NonDisruptive NonDisruptive 2ndChannel(bps) 400 400 400 400 400 Disruptive Type 3600e 3600e 3600e 3600e 3600e

Diag Gen FacC FacT FacB MPTC MPTT

Position Control Trib Control Control Trib LinkConfiguration Point-to-Point** Point-to-Point** Multipoint Multipoint Multipoint Response Period 1 1 1 1 1 TributaryTimeOut 0:10 0:10 0:10 0:10 0:10 Diagnostic Connection CC CC CC CC CC Link Delay 0s 0s 0s 0s 0s Network Delay 0s 0s 0s 0s 0s Packet Delay 0s 0s 0s 0s 0s Extend Channel No No No No No Upstream Port Port 1 Port 1 Port 1 Port 1 Port 1 M-PtSymPort Disable Disable Disable Enable Enable Fast Select Enable Enable Enable Enable Enable

LPDA-2 FacC FacT FacB MPTC MPTT

LPDA-2 Disable Disable Disable Disable Disable LPDA Address 1 1 1 1 1 SNA Backup Disable Disable Disable Disable Disable Code 1

Code 2

** Defaults to Multipoint when MCMP installed.

Model 3610 Model 361 Model 3610 Model 361

* Defaults to 56 kbps when MCMP installed.

1 582218 582218 582218 582218 582218

1 5822181 5822181 5822181 5822181 5822181

FacC

Control

582210 582210 582210 582210 582210

5822101 5822101 5822101 5822101 5822101

FacT

Tributary

FacB

Digital Bridge

MPTC Multipoint

Control

MPTT Multipoint

Tributary

A-4 December 1996 3610-A2-GB46-60

Page 65

Data Service Unit Menu

Table A-1

(2 of 2)

Factory Default DSU Configuration Option Settings

Gen

DTE Port EIA232 EIA232 EIA232 EIA232 EIA232 RTS Control FrcOn DTE FrcOn FrcOn DTE CTS Control Std Std Std Std Std AntiStream Disable Disable Disable Disable Disable LSD Lead Std Std Std Std Std CTS Lead Std Std Std Std Std DSR ForceOn Enable*** Enable*** Enable Enable*** Enable*** SystemStatus Enable Enable Disable Enable Enable DSR on Test Enable Enable Enable Enable Enable Circuit Assurance Disable Disable Disable Disable Disable Test Pattern Std Std Std Std Std RespondRDL Disable Enable Disable Disable Enable LL by DTE Disable Disable Disable Disable Disable RL by DTE Disable Disable Disable Disable Disable Bilateral Loopback Disable Disable Disable Disable Disable External Leads Rate Rate Rate Rate Rate CCN by ExtLeads Disable Disable Disable Disable Disable DTR Alarm Disable Disable Disable Disable Disable SW Version Normal Normal Normal Normal Normal AnswerExternalBU Disable Disable Disable Disable Disable RLSD in MCMP No No No No No Async→Sync AsyncBit/Character 8 8 8 8 8 Stop Bits 1 1 1 1 1 Overspeed 2.3 2.3 2.3 2.3 2.3 PowerOnTest Enable Enable Enable Enable Enable *** DBM-X defaults to Disable.

FacC

Control

Disable Disable Disable Disable Disable

FacT

Tributary

FacB

Digital Bridge

MPTC Multipoint

Control

MPTT Multipoint

Tributary

A-53610-A2-GB46-60 December 1996

Page 66

DSU Configuration Worksheet

DSU Configuration Worksheet B-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

DSU Configuration Worksheet

The DSU Configuration W mode DSU configuration options. Included are option sets for the DSU and LPDA-2 options.

The worksheet presents the options sets with configuration options and values. Y worksheet for:

• Reference

•

Recording changes to options

•

Planning changes to default settings

Use this worksheet along with Chapter 4,

Configuration Option Tables, and Appendix A, Data Service Unit Menu.

orksheet contains Basic

ou can use the

B-13610-A2-GB46-60 December 1996

Page 67

Configuration Worksheet for Basic DSU Mode

Date:_______________________________________________ Location:____________________________________________

Local

Phone Number: (

j )________________________

Device:_____________________________________________

Local

Address:________________________________________

DBM Installed

Serial Number:_______________________________________

Tributary Network Address:______________________________

SNA Diagnostic Interface (LPDA-2) Enabled

DSU

Configuration Options

Value

Rate(Kbps) Auto, 64CC,

64L,

56, 38.4, 19.2,

9.6,

4.8, 2.4

PrtSp(Kbps) D

64, 56, 48, 38.4, 32, 28.8, 24.0, 19.2,

18.8,

18.0, 16.8, 14.4, 12.0, 9.6, 9.2,

8.4,

7.2, 4.8, 4.4, 4.0, 2.4, 2.0, 1.2,

Disab

TxClkSource Int, RXC, Ext, DDS, Prt1, Prt2, Prt3,

Prt4, Prt5, Prt6

Msg Clamp

Enab, Disab

TxElasStor

Enab, Disab

RxElasStor A

Enab, Disab

19.2 PowrLvl

DD A

+6,

0, –10

64KScramblng A

On, Off

64KLatchLpbk A

On, Off

NetIntf A

AggSw

, Forc, Disab

Net ITiming A

Int, NetI, Prt1, Prt2, Prt3, Prt4, Prt5, Prt6

.54 Lpbk

Enab, Disab

Diagnostic DSU

Configuration Options

Value

Diag T

ype NonD, Disr

, Mixed, None

2nd Ch(bps)

100,

400, 800, 1200, 1600

Disr Type 2500,

2600, 3600s, 3600e,

Br56

Diagnostic General

Configuration Options

Value

Position Cntrl, Trib, G2Trb LinkConfg Pt-Pt,

M-Pt

Resp Period

2, 10

TribT

imOut

sec to

min

(5 sec to 10 min) Diag Conn CC, DC Link Delay

0s, 1s, 2s, 5s, 10s, 20s, 50s

Network Delay A

0s, 1s, 2s, 5s, 10s, 20s, 50s

Packet Delay

0s, 1s, 2s, 5s

Extend Chan

es, No

Upstrm Port A

Prt1, Prt2, Prt3, Prt4, Prt5, Prt6

M-PtSymPrt A

Enab, Disab

Fast Sel

Enab, Disab

General

Configuration

Options

Value

DTE Port

EIA232, V

.35 RTS Cntrl FrcOn, DTE CTS Cntrl

Std,

=RTS

AntiStream A

Disab, 1–

100 sec

(async

term = 0

–100)

LSD

Lead

Std, Delay

, FrcOn

CTS Lead

Std, Delay

, FrcOn

DSR FrcOn A

Enab, Disab

SystemStat A

Enab, Disab

DSR on Tst A

Enab, Disab

Circ Assur A

Enab, Disab

st Pattern

AT&T

, Std

RespondRDL A

Enab, Disab

LL by DTE

Enab, Disab

RL by DTE A

Enab, Disab

Bilat Lpbk

Enab, Disab

Ext Leads

ExtLd, Rate, RPowr

CCN by EL A

Enab, Disab

DTR Alarm A

Enab, Disab

SW Vers A

3.24,

4.43,

6.66, Normal

AnswExtBU A

Enab, Disab

Async→Sync

Enab, Disab

AsyncBit/Char 6,

7, 8, 9, 10

Stop Bits

1, 2

Overspeed

1.0, 2.3

PowerOnTst

Enab, Disab

LPDA-2

Configuration Options

Value

LPDA-2

Enab, Disab

LPDA Address

(1 – 256)

SNA Backup

Enab, Disab

Code 1

(6 digits)

Code 2

(7 digits)

ChgMd

Configuration Options

Value

Protocol Mode

DPII, ADp

S1 Hardware

Settings

Value

DBM Interface

Permissive (ON), Programmable (OFF)

Frame Ground/ Signal Ground

Connected (ON), Disconnected (OFF)

EIA-232 T

est Mode

Enable (ON), Disable (OFF)

.35 T

est Mode

Enable (ON), Disable (OFF)

When the Async→Sync configuration option is enabled using the General branch, the following PrtSp(Kbps) settings do not appear: 32, 24.0, 18.8, 18.0, 9.2, 8.4, 4.4, 4.0, and 2.0 kbps

19.2 Power Level defaults to +6 dB when App Module ID displays XLOOP

V.32 Analog DBM only

Configuration options that do not appear when Full mode is disabled using Menu from the Configuration branch.

Page 68

Async Terminal Operation

Async Terminal Start-Up C-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Password Security C-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Enabling the Async Terminal C-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Disabling the Async Terminal C-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Async Terminal to Front Panel Usage Differences C-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Screen Types C-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Selection Screens C-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Changing External Leads C-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Input Screens C-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Customer ID (CID) C-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Amount of Time Input Fields C-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Digital Test C-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Display Screens C-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Async Terminal Start-Up

You

can use an async terminal to manage a standalone

Model 3610 DSU. When enabled, the async terminal:

• Supports a VT100-compatible terminal interface

• Is set to VT100 with 9.6 kbps data rate,

8 bits, 1 stop bit, and no parity

• Emulates the front panel

The modem needs to be set for the same speed of

9.6 kbps before enabling the async terminal. If you are accessing the DSU through an external modem, the modem should have V enabled.

.42bis/MNP error correction

An async terminal is connected to the Model 3610 DSU with a CC-to-DB25 cable. See the Connection section in Chapter 2 for further information.

Upon delivery, the Term feature is available, but disabled. physical connection is made, async terminal access is established by enabling the T

executing power displayed on the async terminal screen.

Disab is the factory-loaded setting. After the

erm configuration option.

The async terminal cannot be used while the DSU is

-up diagnostics. Device Reset is

Async Terminal

C-13610-A2-GB46-60 December 1996

Page 69

COMSPHERE 3600 Series Data Service Units

Password Security

Use the Term password to secure entry into front panel functions from the async terminal. Also use this password to enable the async terminal feature and to gain access to the front panel once T

The default Term password configured on the DSU is

null>. Upon establishing async terminal access from

< the front panel, press the Enter key on the terminal to display the Password Access Menu. Enter the configured password and press the Enter key again.

The T

erm password can be modified at the async terminal or the front panel. The password can be up to 8 characters.

NOTE

erm is enabled.

Select

Chang (change). Enter the password

characters by using the F1 (↑) and F2 (↓ to select available characters, and the

keys to move the cursor to the left or right.

Valid Password Entries

Input

Alpha a Numeric 0

Characters #

Password Entry

z Upper or lowercase

Pound sign

– . /

Dash Period Backslash

) keys

and

Any alpha character entered in the password field must continue to be entered with the same upper and/or lowercase.

set up password security at the front panel:

. Procedure

1. Go to the Confg

to display the T

Select

Pswrd; the Term Pswrd

access the terminal without a password, press

F2 for Save. After the async terminal is enabled, press

Enter

branch. Use the

erm selection. Select

screen appears.

Term Pswrd:________

Chan

g S

ave

to access the top-level menu.

Term.

key

If you enter an invalid password character, the entry is ignored. If the terminal is set up for sound, the terminal beeps when there is an invalid entry

. For this example, site134K is the

password.

Pswrd: site134K ↑ ↓ Enter

Enter the password into the system by pressing the

key; select Save.

The confirmation message Command Complete appears after saving the password to memory.

5. If you do not want to save the password entered, select

Undo.

Pswrd: ________ ↑ ↓ Undo

C-2 December 1996 3610-A2-GB46-60

Page 70

Enabling the Async Terminal

enable the async terminal:

Async Terminal Operation

no key is pressed at the async terminal for 5 minutes, the front panel redisplays and

FP Locked.

User I/F – Idle

. Procedure

1. Ensure that the terminal is connected physically to the DSU.

2. Go to the Confg to display the T

Select

Term.

Select

Enab; the following screen appears.

branch. Use the

erm selection.

Pswrd: ________ ↑ ↓ Enter

5. Enter the previously configured password and press F3. The async terminal is now enabled and the front panel is disabled (locked). The LCD displays

User I/F – Idle

and

FP Locked.

key

If the password is invalid, the Password Access Menu screen reappears. The async terminal feature is considered activated when the T appears (see the

Selection Scr

op-Level Menu screen

eens

section).

Disabling the Async Terminal

To return control of the DSU to the front panel when async terminal (Term

Press the three seconds. The following menu appears:

Enter the password characters and select (F3). If you enter an invalid following screen appears.

) is enabled:

and

keys simultaneously for

Pswrd: ________ ↑ ↓ Enter

password, the

Enter

If you need to see the password, follow the

Passwor

d Security

for Change and the password is displayed.

section to access

Chang

. Press

User I/F – Idle F

P L

ocked

6. From the terminal, press the Enter key and the Password Access Menu screen appears.

If the password is valid, the DSU’s top-level menu appears on the async terminal. At the same time, the LCD’

s message changes to:

User I/F - Activ F

P L

ocked

User I/F – Idle

P L

ocked

If a valid password is entered, the front panel returns to the top-level menu.

Port1 DSU 9.6 C Local Remot

3. Press F1 for Local. Press the key until Confg appears; select

Confg.

C-33610-A2-GB46-60 December 1996

Page 71

COMSPHERE 3600 Series Data Service Units

Press the

key until T

erm appears; select

Term. The following screen appears.

Term: Stndby Enab Disab Pswrd

Async Terminal to Front Panel Usage Differences

tree sequences and functions are the same for the front panel and the async terminal. There are a few areas with slight differences. From a selection or display screen, pressing the Enter key at any time during a session refreshes the async terminal’

s screen.

CID

Select

Disab.

NOTE

When you disable the async terminal connection, the speed changes from 9.6 kbps to the NMS interface of 1.2 kbps.

NOTE

When no entries are made for 5 minutes, the async terminal session times out and a blank screen appears. When you press the Enter key, the Password Access Menu

screen

appears.

Some

symbols appearing on an async terminal screen differ from the front panel keypad as shown in the table below

. The first two table entries represent front panel function keys. The remainder of the table relates to front panel to async screen displays. For keypad function details, refer to the Keypad section of Chapter 3.

Symbol Display Comparison

Front Panel

↑ (F1)

↓ (F2) ∨

Async Terminal

∧

C-4 December 1996 3610-A2-GB46-60

µ *

—

(line above text line)

(line below text line)

→ > ← <

∧

∨

Page 72

Async Terminal Operation

Screen Types

There

are three types of async terminal screens:

•

Selection screens

•

Input screens

•

Display screens

Some functions operate the same throughout the async terminal interface. These functions are the following:

• To return to the top-level menu from any selection

screen or from anywhere within the menu hierarchy, enter T (or Ctrl-T pressing the

key from the front panel. The t

can be upper or lowercase.

• To return to the previous menu, enter U (or

). This is the same as pressing the

Ctrl-U

from the front panel. The u can be upper or lowercase.

• To view Health and Status, enter V (or Ctrl-V).

See Chapter 3 for Health and Status access using the front panel. The v can be upper or lowercase.

o end the async terminal session, enter

• T

This logs off the async terminal and returns to the Password Access Menu screen.

). This is the same as

Ctrl-x.

key

LED

Customer ID: ORLANDO2 Model: COMSPHERE 3610

Port 1 DSU 9.6 C

1 – Local T/Ctrl–T=T 2 – Remote U/Ctrl–U=

V/Ctrl–V=View H/S

PRESS Desired Selection Key:

Ctrl–x = Disconnect

Every

configuration option selection screen presents

Alarm

Status

Bkup Test

op Menu

Up Menu

Previous as the first choice. From the front panel, the sequence is Next as the first choice and Prev (Previous) as the last choice.

The Top-Level Menu screen displays LED status for Alarm, Backup, and Test for the active core if a condition exists on the interface. Each status only appears if the front panel LED is lit or blinking.

When you press

1 – Local, the Second-Level Menu

screen appears. The third line on the screen changes to

Local Mode

and the options follow the menu tree shown

in Appendix A.

Selection Screens

Selection through the menu tree. After password access, the T

op-Level Menu screen appears on the async terminal as shown below displayed. This Port 1 operating at the port speed of 9.6 kbps.

To select from the menu, enter the number or letter

that corresponds with your desired selection (e.g., enter 1 to select the Local branch). No carriage return <CR> is required.

screens display the selections available

. The unit’s current configuration is

example identifies a Control DSU with

Customer ID:

1 – Stat T/Ctrl–T=T 2 – Bckup U/Ctrl–U= 3 –

Test V/Ctrl–V=View H/S 4 – Confg 5 – Ctrl

PRESS Desired Selection Key:

ORLANDO2

Local Mode:

Model:

COMSPHERE 3610

op Menu

Up Menu

Ctrl–x = Disconnect

C-53610-A2-GB46-60 December 1996

Page 73

COMSPHERE 3600 Series Data Service Units

access the Configure branch:

PRESS: 4 – Confg

The Configure Menu Selection screen appears and is

comparable to selecting

Customer ID:

1 – Opts T/Ctrl–T=T 2 – PList U/Ctrl–U= 3 – Dir 4 – Phone 5 –

Addr 6 – ChgMd 7 –

Term

PRESS Desired Selection Key:

ORLANDO2

Confg from the front panel.

Model:

Configure:

COMSPHERE 3610

op Menu

Up Menu

V/Ctrl–

V= V

iew H/S

Ctrl–x = Disconnect

Changing External Leads

The External Leads configuration option must be set before external leads can be displayed or changed. T external leads, select ExtLd from General Configuration Options (Table 4-4). After External Leads is enabled:

o set

Customer ID:

1 – Displ T/Ctrl–T=T 2 – Chang U/Ctrl–U=

PRESS Desired Selection Key:

ORLANDO2

External Leads:

Model:

COMSPHERE 3610

op Menu

Up Menu

V/Ctrl–V=View H/S

Ctrl–x = Disconnect

4. The External Leads Input screen appears. The OutA or OutB field will be highlighted. To change the value of the bolded field:

PRESS: 1 – Toggle The highlighted field will change from high to

low or vice versa for on and off. At the front panel, use the ↑↓ keys instead. T the OutA and OutB fields, use the <

o move between

Tab

> key on

the keyboard. At the front panel, use the or

key

. Procedure

1. From the Second-Level Menu screen:

PRESS: 5 – Ctrl

The Control Function Menu selection screen

2. appears.

PRESS: 3 – ExtL

The External Leads Menu selection screen

3. appears.

PRESS:

2 – Chang

Customer ID:

1 – Toggle T/Ctrl–T=T 2 – Save U/Ctrl–U=

PRESS Desired Selection Key; <T

ORLANDO2

OutA

Model:

:^ OutB:_

COMSPHERE 3610

V/Ctrl–V=V

AB> to go between fields

Ctrl–x = Disconnect

op Menu Up Menu iew H/S

5. If the value of either field is changed:

PRESS: 2 – Save

C-6 December 1996 3610-A2-GB46-60

Page 74

Async Terminal Operation

Input Screens

Input screens require data input followed by the

> key

carriage return <CR

. The options to enter T for top

menu, U for up one menu, and H for Health and Status do not appear. They are disabled for input screens;

and

Ctrl-V

Ctrl-T, Ctrl-U

continue to be available

along with Ctrl-x.

Customer ID (CID)

The Customer ID field appears on the second line of

every screen.

. Procedure

1. From the Configure Menu Selection screen, to enter or change the Customer ID:

PRESS: 6 – Term

2. The Async T Term: Enab as the third line. T Customer ID:

PRESS: 4 – CID

Customer ID:

erminal Menu screen appears with

o access the

ORLANDO2

Model:

erm: Enab

COMSPHERE 3610

Valid Customer ID Entries

Input

Alpha a

Numeric 0 Characters #

z Upper or lowercase

– . /

ID Entry

accepted. Display always uppercase.

Pound sign Dash Period Backslash

If you enter an invalid character, the entry is ignored. If the terminal is set up for sound, the terminal beeps when there is an invalid entry.

4. After entering the Customer ID (CID), press the carriage return <CR>. The Customer ID menu screen reappears.

PRESS: 2 – Save

When the confirmation message

Command

Complete appears after saving the CID to memory, the

CID will appear on every screen and you can access other menus.

1 – Enab T/Ctrl–T=T 2 – Disab U/Ctrl–U= 3 – Pswrd V/Ctrl–V=View H/S 4 – CID

PRESS Desired Selection Key:

Ctrl–x = Disconnect

3. From

the Customer ID Menu screen, to set up or

op Menu

Up Menu

change the Customer ID:

PRESS:

1 – Chang

The Customer ID input screen appears. The Customer ID can be up to 8 characters.

Amount of Time Input Fields

Three input screens have an amount-of-time prompt for specific user input. The input field must be fully populated. The three screens are:

• Digital T

est Run T

• Configuration Diagnostic Tributary Time Out

(TribTimOut)

• Configuration Backup Network Time Out

(NtwkTimOut)

ime

C-73610-A2-GB46-60 December 1996

Page 75

COMSPHERE 3600 Series Data Service Units

Digital Test

Access Digital Test from the second-level menu of the

est branch. Diagnostics (

Diag

) must be set to None

from the Confg branch first. To set the amount of time for the Digital T

est (

DT):

. Procedure

Select

2. The DSU Digital T

3. The Port Number selection screen appears.

4. The DSU Digital T

DSU from the DSU or DBM selection

screen; the DSU T

ests selection screen appears.

PRESS: 4 – DT

est selection screen appears.

PRESS: 1 – Start

PRESS: 2 – Prt1

est Run T

ime input screen appears. The hhh:mm:ss must be fully populated as shown below

Display Screens

Display screens provide configuration information and results of performance and device-specific tests. All information is presented on one async terminal screen.

The Health and Status display shown below can be accessed by:

•

Using selection screens and the menu tree path

• Ctrl-V from input screens

• V from all other screens

Customer ID:

ORLANDO2

Model:

H/S: 25:12:45 > 9.6 DDS

H/S: 21:10:50 > 9.6 NetI

H/S: > DBM:Disable

COMSPHERE 3610

T/Ctrl–T=T

U/Ctrl–U=

V/Ctrl–V=View H/S

op Menu

Up Menu

Customer ID:

ENTER Input Form of (hhh:mm:ss):000:08:00

5. Enter the run time for the Digital T

ORLANDO2

Run T

Model:

im: 0:00:00

COMSPHERE 3610

Ctrl–T=T Ctrl–U= Ctrl–V=View H/S

Ctrl–x = Disconnect

op Menu

Up Menu

est and press the carriage return <CR>. The following message appears on the screen:

6. The Digital T

est completion screen appears.

Please wait.

For further information on Digital Test, refer to

the Digital Test section of Chapter 3.

Ctrl–x = Disconnect

C-8 December 1996 3610-A2-GB46-60

Page 76

SNA Diagnostics

SNA Diagnostic Interface D-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

LPDA-2 Addressing D-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SNA Diagnostic Interface

The SNA Diagnostic Interface option is compatible with IBM’s LPDA-2 (Line Problem Determination Aid, Revision 2 by LPDA-2 can be enabled from:

• The front panel

• COMSPHERE 6700 or 6800 Series NMS

This feature is compatible with all other options available to the 3600 Series DSUs: DBM, MCMP TDM. However, the SNA Diagnostic Interface option is supported via Port 1 on a MCMP or TDM circuit card.

The 3600 Series DSUs operating with the SNA Diagnostic Interface option emulate IBM 5822 DSUs. The 3600 Series DSUs are data compatible, but they are not diagnostically compatible with IBM 5822 DSUs. A mixture of 3600 Series and IBM 5822 DSUs will not support LPDA-2 diagnostics. The SNA Diagnostic Interface option must be enabled in each control and tributary DSU.

) protocol. Management of 3600 Series DSUs

, and

The 3600 Series DSU responds to commands from an NMS or NetView on a first-come, first-served basis. The NetView operator can monitor DSU parameters and line status and can initiate tests from NetV configuration options cannot be changed; this is a NetView constraint. An operator of a 6700 or 6800 Series NMS can change network configuration options as well as perform tests.

The SNA Diagnostic Interface firmware is installed in the carrier-mounted Model 361 Model 3610 DSU. Either model may be configured as the control of a circuit that is to be managed by the

iew management system.

NetV

The LPDA-2 option must be enabled from the Configuration branch (Table 4-5).

iew. DSU

1 DSU and the standalone

D-13610-A2-GB46-60 December 1996

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COMSPHERE 3600 Series Data Service Units

LPDA-2 Addressing

The

addressing scheme for LPDA-2 establishes a relationship between the link segments (primary circuit and extended circuit) and the remote DSUs populating the circuit. It allows you to target a link segment or a particular control-tributary DSU pair in the circuit for diagnostic testing.

The LPDA-2 address is independent of the DSU network address associated with an NMS or front panel command, although you may choose to assign the same value to each.

The following rules apply to assigning the LPDA-2 address to control DSUs (Figure D-1):

• Link Segment Level 1. The control DSU closest

to the NetView host is the first level control and assigned the address 1.

• Link Segment Level 2. An extended control DSU,

is the second level control and assigned the address 2.

• Valid Addresses. Valid addresses for control

DSUs range from 1 to 255.

The following rules apply to assigning the LPDA-2

address for tributary DSUs:

• Valid Addresses.

alid addresses for tributary

DSUs range from 1 to 255.

Single DTE.

•

The tributary DSU address is set to the physical unit address of the attached terminal device; this is a NetV

iew constraint.

• Extended Circuit. For configurations having

extended circuits, the backbone tributary DSU in the primary circuit must be set to 253 and configured as a point-to-point circuit. Address 253 (FD hex) is the broadcast LPDA-2 address.

NMS

FEP

Netview

Host

* LPDA-2 Address

CPE = Customer Provided Equipment

CARRIER

SDU

DSU

Control DSU

Figure D-1. LPDA-2 Addressing Example

Link Segment Level 1

(Primary Circuit)

253* 4*

Tributary

DSU

Crossover

Cable

Control DSU

LPDA-2 Control

Extended

Link Segment Level 2

(Extended Circuit)

CPE

Tributary

DSU

496-12986b-0

D-2 December 1996 3610-A2-GB46-60

Page 78

Troubleshooting and

Front Panel Messages

Troubleshooting E-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Messages E-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Messages Format E-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Troubleshooting

Confirm the installed hardware options. Y power-up message for each hardware option type; for example:

DSU Pass

•

MUX Pass (TDM or MCMP)

•

DBM Pass

If a fail message appears or a hardware option does not appear, go to the Configuration (Config) branch, load, and save a factory-set configuration (FacC or FacT). Refer to the Power-Up Routine

If the DSU is not connected to the network yet, the:

•

Red

Alrm indicator is lit

•

LCD displays facility alarm

section in Chapter 2.

DDS F:No Signal, indicating a

ou receive a

Messages

This section describes the informational messages that

may appear on the DSU’s front panel when:

•

Using the Async T

• Executing a command

• An error condition prevents execution of a

command

The messages listed here do not include menus, data entry displays, or specific test results; they do give the condition for the message and any action to perform.

• T

able E-1 lists command progress messages.

• Table E-2 identifies and describes front panel

messages displayed when async terminal is enabled.

• T

able E-3 lists command error messages.

erminal feature

• LCD displays Health and Status information

. Procedure

If the DSU fails the power-up test:

1. Go to the T

Re-execute the Device T passes, continue operating the DSU.

If the device test fails again, call your sales or service

representative.

est branch.

est (Devic). If the test

• Table E-4 contains configuration error messages

that may appear when the verification routine runs after pressing SAVE.

able E-5 lists device health and status messages.

• T

able E-6 presents subnetwork health and status

messages.

For configuration error messages supporting TDM, MCMP Document No. 3610-A2-GB48.

For configuration error status messages supporting DBMs, refer to Document No. 3610-A2-GB49.

, and digital bridging, refer to

, progress, and health and

E-13610-A2-GB46-60 December 1996

Page 79

COMSPHERE 3600 Series Data Service Units

Messages Format

The

following screen shows the message format.

Command Name Message

Table E-1

Command Progress Messages

Message

Command Complete Command successfully

completed. Command Failed Command was not executed. Please wait . . . Command is taking more than

2 seconds to complete.

Condition

Table E-2

Front Panel Messages for

Enabled Async Terminal

Message

User

I/F – Idle

FP Locked User I/F – Activ

FP Locked Term: Stndby Async terminal is enabled but

Async terminal is enabled; the front panel is locked.

Async terminal is enabled and a session is started.

inactive. Front panel access has been initiated and a valid password entered. The async terminal is in Standby mode.

If no key is pressed for 5 minutes, the DSU reverts to User I/F – Idle.

Condition

Table E-3

Command Error Messages

Message

Command

Conflict w/Envir Command conflicts with test in progress,

Inval Selection: No Valid Choices

No Response Invalid remote address or remote device not

Not in Menu NMS command not in supported set of

Failed

Command could not execute and none of the error messages below apply.

configuration inappropriate for this command, or configuration option settings are not compatible.

Invalid menu selection based upon previous selections that caused a menu to display with no selectable options.

powered, connected to network, or enabled.

commands for NMS.

Condition Action

If problem cannot be corrected, call your sales or service representative.

1. Check for a test in progress.

2. If there is a test in progress, either wait for the test to finish or abort the test.

3. If there is no test in progress, check

configuration option settings.

Press any key to return to the top-level menu.

Check remote address and status.

Use a valid NMS command.

E-2 December 1996 3610-A2-GB46-60

Page 80

Table E-4

(1 of 2)

Configuration Error Messages

Troubleshooting and Front Panel Messages

Message

AgSw Req SymPrt Network Interface is set to aggregate switch or

forced on for a multipoint network with port speed not equal to DDS speed, and multipoint symmetric mode is disabled.

AgSw&Trib Incmpt A tributary is incompatible with Network

Interface set to aggregate switch.

AutoRate&TxClk The DSU data rate is set to Auto and transmit

clock source is not set to DDS or RXC.

Br56&SpeedIncmpt DDS Speed must be 56 kbps for Br56

diagnostics.

Circ Assur Inval Circuit Assurance enabled with either:

• Nondisruptive diagnostics, or

• Port speed not equal to data rate. Circuit

assurance is invalid with rate adaption.

CTS Ctrl&DiagTyp CTS Control is =RTS with Mixed or

NonDisruptive diagnostics for a multipoint tributary.

DSU Agg Exceeded The aggregate port speeds cannot exceed the

DDS data rate.

Condition Action

Symmetric port is required when configuration option NetIntf is set to AggSw or Forc. Enable configuration option M-PtSymPrt.

Disable the configuration option NetIntf if aggregate switching is not used.

Change configuration option Rate(Kbps) or TxClkSource.

Set configuration option Disr Type (disruptive diagnostic type) to Br56, or set PrtSp(Kbps) to 56 kbps.

Change configuration option:

• Diag Type to another option, or

• PrtSp(Kbps) to match Rate(Kbps).

Set configuration option CTS Cntrl to Std (standard) or set configuration option Diag Type to Disr or None.

Set configuration option PrtSp(Kbps) to be equal to or less than the DDS Rate(Kbps).

DSU AsyncUndersp

Elast Not Valid Receive Elastic Store is not allowed if the port

Incmpt Diag mode Incompatible diagnostic mode:

Invalid Port Spd Disruptive diagnostic type 2500 or 2600 is

Inval RTS Cntrl Multipoint tributary device with RTS Control

Inval 2ndChanSpd DSU port speed with Diagnostic Type set to

• A port configured for asynchronous operation cannot be the underspeed port.

• Bit robbing for NonDisruptive diagnostics is not allowed.

speed does not equal the DDS data rate or if the diagnostic type is set to NonDisruptive.

• Point-to-point configuration is not compatible with Mixed diagnostics.

• Disruptive diagnostic type 2500 or 2600 is not compatible with NonDisruptive diagnostic type.

being used with rate adaption.

forced on.

NonDisruptive. Use configuration option In-Band Secondary Channel Diagnostic Speed when no excess bandwidth is available.

Use configuration option Async→Sync to set one port to synchronous and underspeed, or lower the asynchronous port speed, or set Diag type to Disr, Mixed, or None.

Set configuration option PrtSp(Kbps) to match the Rate(Kbps). When configuration option RxElasStor is enabled, Diag Type must be set to Disr.

• For point-to-point, set configuration option Diag Type to Disr, NonD, or None.

• Change configuration option Diag Type to Disr, Mixed, or None, or change Disr Type to a setting other than 2500 or 2600.

Set the configuration option PrtSp(Kbps) to match the Rate(Kbps) to eliminate rate adaption.

Set configuration option RTS Cntrl to DTE.

Refer to configuration option 2nd Ch(bps) for valid diagnostic speeds with in-band diagnostics.

E-33610-A2-GB46-60 December 1996

Page 81

COMSPHERE 3600 Series Data Service Units

Table E-4

(2 of 2)

Configuration Error Messages

Message ActionCondition

LPDA&PrtSPIncmpt LPDA enabled is incompatible with port 1 speed

set to less than 4.8 kbps with:

• A digital DBM and diagnostic type set to NonDisruptive, or multipoint with symmetric mode disabled and port speed is less than DDS speed, or MCMP.

• Disruptive diagnostic type set to Br56 and diagnostic type set to NonDisruptive, or multipoint with symmetric mode disabled and port speed is less than DDS speed, or MCMP.

• Change configuration option PrtSp(Kbps) to

4.8 kbps or higher, or change Diag Type, or enable M-PtSymPrt, or change MUX Funct to not equal MCMP.

• Change configuration option Disr Type to Br56, or set PrtSp(Kbps) to the DDS speed, or enable M-PtSymPrt. MCMP is not available with symmetric mode and multipoint.

10BPC & 2 Stops Two stop bits not available when number of bits

per character is set to 10. Need one start bit; the maximum size of asynchronous character is 12 bits (ASPEN chip).

V.54&2500 Incmpt Disruptive diagnostic type set to 2500 is

incompatible with V.54 Loopback enabled.

When the configuration option AsyncBit/Char is set to 10, set the configuration option Stop Bits to 1.

Set configuration option Disr Type for any value

2500, or disable configuration option V.54

but Lpbk.

E-4 December 1996 3610-A2-GB46-60

Page 82

Table E-5

(1 of 4)

Device Health and Status Messages

Troubleshooting and Front Panel Messages

Message

Config Corrupt Configuration is corrupt. Reset all configuration options from one of the

nn.n

DDS Indicates the data rate (

(DSU or DBM) when there are no alarms.

DDS F:

alarm

Digital facility alarm; following network alarms:

1. BiplrViol – Excessive Bipolar Violations. Data rates do not match or network trouble.

2. CrossPairs – Crossed Pairs. DDS Receive and Transmit pairs are crossed.

3. CMI Fac Alarm – Control mode idle notification from a remote unit.

4. No Signal – No signal received. Local DSU network problem.

5. No Sync – No synchronization. Rate(Kbps) is set to Auto and the DSU is attempting to detect the data rate.

Condition Action

factory-loaded option sets: FacC, FacT, FacB, MPTC, or MPTT. Refer to T

nn.n

) of the active core

alarm

is one of the

Data rate set by configuration option Rate(Kbps) or detected by autorating.

1. Verify that the DSU Rate(Kbps) setting matches the network speed. Try temporarily setting the Rate(Kbps) to Auto and the network speed will appear on the H/S display if the rate can be determined. If the network is the problem, contact the service provider.

2. Check the local wiring.

3. The CMI notification is set using the Backup configuration option FAOnCMI.

4. Check DDS line from rear of DSU and from wall for network connection. Contact the service provider.

5. Set the Rate(Kbps) configuration option to the actual data rate. If bipolar violations occur, contact the service provider.

able 2-1.

6. OutofServc – Out-of-Service condition. Rate(Kbps) is set to 56 kbps or less and remote not detected.

7. Rate Confl – Rate conflict. Rate(Kbps) is set to Auto and the total of the port speeds exceeds the aggregate rate.

Dial Tone:Fail Dial tone test was enabled and test failed. Try another piece of equipment on the line. Line

DSU:Device Fail Internal failure in the DSU is detected. Initiate a Device self-test (Devic) from the Test

DSU:Disable DSU transmitter is disabled. To enable the DSU, use Control branch’s

6. Verify that the remote site is in service.

7. The total of port speeds exceeds the data rate. Lower the PrtSp(Kbps).

may be out of order.

branch. If message continues, call your sales or service representative.

control option TxCtl.

E-53610-A2-GB46-60 December 1996

Page 83

COMSPHERE 3600 Series Data Service Units

Message ActionCondition

Table E-5

(2 of 4)

Device Health and Status Messages

DSUTst:

nn.n

External Alarm A The DSU detects a positive voltage on Pin 23. Refer to configuration option Ext Leads. External Alarm B The DSU detects a positive voltage on Pin 19. Refer to configuration option Ext Leads.

test,init

EBrdg Indicates the Bridge Rate (

The DSU is running a test, initiated from init.

test

is one of the following tests:

BERT — Bit Error Rate Test BiL — Bilateral Loopback Dev — Device Test DL — Digital Loopback DT — Digital Test DTE — DTE Loopback E-E — End-to-End Test Lamp — Lamp Test LL — Local Loopback NetL — Network Loopback RL — Remote Digital Loopback TM — Test Mode

init

is one of the following initiators:

DCP — Diagnostic Control Panel DTE — Data T

LPDA — NetView-initiated test NMS — Network Management System Ntwk — Network Remt — Remote DSU

core (DSU or DBM) when there are no alarms.

(front panel)

erminal Equipment

nn.n

) of the active

Refer to the for details regarding each test. Many tests require no action.

NetL (network loopback) test may appear if the service provider is testing the line; they should notify you of the testing. Could also be a problem with crossed pairs needing repair.

The bridge rate is set with the MUX Setup configuration option.

Test Branch

section of Chapter 3

Invalid Address A DSU was powered up with an invalid

address. Invalid addresses are: 0

192 191

255

MCMPCommunicFail No reply from MCMP circuit card. The DSU

periodically polls the MCMP circuit card for health and status. When the DSU does not receive a response, this message appears.

— Reserved for the SDU — Reserved for the broadcast

address

— Invalid for a DSU with a DBM

because of the reserved 192 broadcast address

— Invalid for a DSU with a DBM

>80 — Addresses greater than 80 are

not valid for DPII protocol

Change the configuration option Network Address.

The problem could be temporary while retraining is in progress. If message continues, initiate a Device self-test (Devic) from the Test branch. If failure continues, call your sales or service representative.

E-6 December 1996 3610-A2-GB46-60

Page 84

Device Health and Status Messages

Message ActionCondition

Table E-5

(3 of 4)

Troubleshooting and Front Panel Messages

MUX CommunicFail No reply from TDM circuit card. The DSU

periodically polls the TDM circuit card for health and status. When the DSU does not receive a response, this message appears.

MUX Device Fail Internal failure of TDM or MCMP is detected. Initiate a Device self-test (Devic) from the Test

nn.n

NetI Network Interface speed when configuration

option NetIntf is set to Forc.

NetI F:No Signal No signal from Network Interface alternate port. The configuration option NetIntf is set to Forc

OutofFrameThresh For DSUs operating on a single port (rate

adaption or nondisruptive), TDM, or MCMP local DSU has detected a continuous MUX Out-of-Frame condition.

If the alarm continues on a point-to-point circuit and the local DSU is configured for automatic backup, the local DSU disruptively tests the DDS circuit. If the test fails, the DSU issues a DDS Facility alarm and initiates dial backup.

PnnTst:

test,init

The DSU is running a test on port nn (01—06), initiated from

test

is one of the following tests:

BERT — Bit Error Rate Test DL — Digital Loopback DT — Digital Test DTE — DTE Loopback RL — Remote Digital Loopback

init

is one of the following initiators:

DCP — Diagnostic Control Panel DTE — Data T

LPDA — NetView-initiated test NMS — Network Management System Remt — Remote DSU TM — Test Mode

init

(front panel)

erminal Equipment

branch. If failure continues, call your sales or service representative.

Informational message.

for aggregate switching. The alarm clears when a local DSU

, the

synchronizes with a remote DSU. Both DSUs need to have the same port speeds.

Refer to the for details regarding each test. Many tests require no action.

Test Branch

section of Chapter 3

Port

nnn

DTR Alarm The DTR lead at port

been Off for more than 30 seconds.

nnn

(01—06, All) has

Check DSU connection and DTE power connection.

E-73610-A2-GB46-60 December 1996

Page 85

COMSPHERE 3600 Series Data Service Units

Message ActionCondition

Prt

nnn

Disable Transmitter at port

disabled.

Prt

nnn

Stream Term Streaming terminal. DTE at port

All) has its RTS lead turned ON longer than the predefined time.

Table E-5

(4 of 4)

Device Health and Status Messages

nnn

(01—06, All) is

nnn

(01—06,

Use the Control branch’s control option TxCtl to enable the port.

Refer to configuration option AntiStream. Verify DTE operation.

Redun Fan Alarm Indicates a problem with the fan on the –48 Vdc

Central Office Power Unit.

Redun Pwr Alarm Indicates a problem with the power on the

–48 Vdc Central Office Power Unit.

Subnetwrk Alarm A major alarm was set Off by one of the devices

in your subnetwork.

Sub-normal Speed The DBM is operating at a dial backup speed

less than the DSU and the DDS network speed.

Subtree Truncat Downstream health and status information has

been truncated because of an overflow of the system limits.

Check NMS adapter cable connection to –48 Vdc power supply cable connections. If okay, call your sales or service representative.

Check the Subnetwork Health and Status report and Table E-6.

Set the configuration option DBM Rate(Kbps) to the DDS network data rate.

Clear any alarms to decrease the amount of information reported.

E-8 December 1996 3610-A2-GB46-60

Page 86

Table E-6

Subnetwork Health and Status Messages

Troubleshooting and Front Panel Messages

Message

Devic Device Failure. One of the following major alarms is

in ef

fect:

• Configuration Corrupt

• DSU Device Failure

• MUX Device Failure

DialBU Dial BackUp Mode. Indicates DBM is active. DialCN Dial Connect. Indicates DBM is in Standby mode. DialTn Dial Tone Test failure. Check the DBM facility. Disab Indicates DSU, DBM, or Port nn is disabled

(nn = 1–6). DTR DTE alarm. Data Terminal Ready lead is Off. ExtLd External lead alarm A or B. See External Alarm A message in Table E-5. Facil DDS facility alarm. Indicates a network facility

alarm. MAJOR Indicates a major alarm from a DATAPHONE II

device. MUX MUX (TDM or MCMP) failure. See MCMP or MUX CommunicFail message in

Condition Action

See Table E-5 for conditions and action.

Check status of address.

When facility working, remote status address is available.

Verify DPII connection.

Table E-5.

NoResp No response. The active poll list member did not

respond. Normal Active poll list member reports no alarm or status. Status message. RPower Redundant power supply alarm. See Redun Pwr Alarm message in Table E-5. Stndby Dial standby. Status message. Stream Streaming terminal. See Prt SubSpd Subnormal operating speed. See Sub-normal Speed message in Table E-5. Test Test mode. DSU test, DBM test, or Port nn test

= 1–6).

( Thresh Threshold exceeded. See OutofFrame Thresh message in Table E-5. TribTm Tributary time-out. Multipoint configuration with no response. Trunc Subtree truncation. See Subtree Truncat message in Table E-5.

Probable cause: facility problem, remote DSU problem, or poll list incorrect.

nnn

Stream Term message in Table E-5.

Status message.

E-93610-A2-GB46-60 December 1996

Page 87

Technical Specifications

Technical Specifications F-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Technical Specifications

The

3600 Series DSUs can be used as a Local Area Data Set (LADS) to provide a point-to-point link between two devices. The network facility is a direct 4-wire crossover connection without using a digital service.

Tables F-1 through F-6 list the technical specifications

for the following:

LADS Connection Distances for

Data Rate

(kbps)

2.4 20.0

4.8

Models 3610

19 Gauge

(.0359I or

.9122 mm)

(32.2 km)

19.4 mi

(31.2 km)

A3-xxx and 3611-A3-xxx or Lower

22 Gauge

(.0253I or

.643 mm)

(26.7 km)

(20.5 km)

• LADS maximum connection distance requirements

(Tables F-1 and F-2)

• 3600 Series DSU (Tables F-3 and F-4)

• 3600 Hubbing Device for use with a Model 3610

DSU only (Table F-5) Async T

•

only (Table F-6)

Table F-1

Wire Diameter (AWG)

24 Gauge

(.0201I or

1 mm)

.51

16.6 mi

12.7 mi

(20.5 km)

9.6 mi

(15.4 km)

erminal for use with a Model 3610 DSU

26 Gauge

(.0159I or

.404 mm)

9.4 mi

(15.1 km)

7.1 mi

(11.5 km)

9.6

19.2* 1

38.4 1

* Power level is –10 dBm.

15.2 mi

(24.5 km)

1.8 mi

(19.0 km)

1.2 mi

(18.0 km)

9.2 mi

(14.8 km)

9.2 mi

(14.8 km)

9.7 mi

(15.6 km)

7.5 mi

(12.1 km)

6.5 mi

(10.5 km)

5.4 mi

(8.7 km)

5.4 mi

(8.7 km)

7.3 mi

(11.7 km)

5.7 mi

(9.2 km)

4.6 mi

(7.4 km)

3.8 mi

6.2 km)

3.8 mi

(6.2 km)

5.6 mi

(9.0 km)

4.2 mi

(6.8 km)

3.2 mi

(5.1 km)

2.8 mi

(4.5 km)

2.8 mi

(4.5 km)

F-13610-A2-GB46-60 December 1996

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COMSPHERE 3600 Series Data Service Units

LADS Connection Distances for Models 3610

Data Rate

(kbps)

19 Gauge

(.0359I or

.9122 mm)

Table F-2

A4-xxx and 3611-B4-xxx

Wire Diameter (AWG)

22 Gauge

(.0253I or

.643 mm)

24 Gauge

(.0201I or

.51

1 mm)

26 Gauge

(.0159I or

.404 mm)

2.4 20.0

4.8

9.6

19.2

38.4 1

(32.2 km)

19.4 mi

(31.2 km)

15.23 mi

(24.51 km)

12.91 mi

(20.78 km)

1.2 mi

(18.0 km)

10.84 mi

(17.45 km)

10.69 mi

(17.2 km)

16.6 mi

(26.7 km)

12.7 mi

(20.5 km)

10.18 mi

(16.39 km)

8.23 mi

(13.25 km)

6.55 mi

(10.55 km)

6.4 mi

(10.3 km)

6.06 mi

(9.76 km)

12.7 mi

(20.5 km)

9.6 mi

(15.4 km)

7.32mi

(11.77 km)

5.89 mi

(9.49 km)

4.79 mi

(7.71 km)

4.50 mi

7.24 km)

4.47 mi

(7.2 km)

Table F-3

(1 of 3)

General COMSPHERE 3600 Series Technical Specifications

9.4 mi

(15.1 km)

7.1 mi

(11.5 km)

5.87 mi

(9.45 km)

4.69 mi

(7.55 km)

3.53mi

(5.68 km)

3.34 mi

(5.37 km)

3.20 mi

(5.15 km)

Specifications Criteria

AC POWER FUSE

Model 3610/361 3000 Series Carrier

AC POWER REQUIREMENTS

3610 DSU 3610 DSU with DBM

3611 DSU 3611 DSU with DBM

3000 Series Carrier (16 DSUs with DBMs plus SDU and fan module)

F-2 December 1996 3610-A2-GB46-60

1 DSU

No accessible fuse 4-amp fuse for +115 Vac; Part number 190-0037-0431

(two spares supplied with carrier)

24 Vac (CT), 60 Hz +3 (0.093 amp, 8.0 watts at 115 Vac) 24 Vac (CT), 60 Hz +

24 Vac (CT), 60 Hz + 24 Vac (CT), 60 Hz +

90—132 Vac, 60 Hz +

3 (0.114 amp, 9.5 watts at 115 Vac) 3 (0.029 amp, 4.5 watts at 115 Vac)

3 (0.080 amp, 8.0 watts at 115 Vac)

3 (1.930 amp, 165 watts at 115 Vac)

Page 89

General COMSPHERE 3600 Series Technical Specifications

Specifications Criteria

APPROVALS

FCC Part 15 FCC Part 68

3610 DSU 3611 DSU, 3000 Series Carrier

CSA

Safety

3610 DSU 3611 DSU, 3000 Series Carrier

Emissions

Bell Canada

DTE INTERFACE

3610 and Non-modular 3611 DSUs

25-pin D-subminiature connector 34-pin connector

Modular 361 25-Pin V.35 Interface

Uses a Rear Connector Plate with two 25-pin D-subminiature connectors.

1 DSU

echnical Specifications

Table F-3

(2 of 3)

Class A digital device AW292J-61661-DD-N

Listed UL 1950 Recognized Component UL 1950

Certified CSA 22.2, No. 220-M1986 Certified Component CSA 22.2, No. 950-M89

Class A digital apparatus “DCTE Specifications,” July 1989, Issue 1

EIA-232/ ITU V.24 (ISO 2110) ITU V.35 (ISO 2593)

A modular DSU V.35 interconnect cable is required to use the V.35 connector. The cable provides an interface between the DSU’s 25-pin D-type connector and the DTE cable’s V.35 connector.

ENVIRONMENT

Operating Temperature Storage Temperature Relative Humidity Shock and Vibration

HEAT DISSIPATION (MAX.) AT 115 VAC

3610 DSU 3610 DSU with DBM

3611 DSU 3611 DSU with DBM

3000 Series Carrier (16 DSUs with DBMs plus SDU and fan module)

NMS COMPATIBILITY DATAPHONE II System Controller, Diagnostic Console, or

ASYNC TERMINAL ANSI X3.64/VT100 compatibility

32°

to 122

° F (0°

to 50

° C)

to 158

–4° 5%—95% (noncondensing) Withstands normal shipping and handling

22.16 Btu/hr.

29.00 Btu/hr.

22.16 Btu/hr.

27.30 Btu/hr.

563.00 Btu/hr.

Network Controller COMSPHERE 6700 Series NMS, Release 4.0 or greater for full support COMSPHERE 6800 Series NMS, Release 4.1.5 or greater for full support NetView, Version 1, Release 3 or greater

Data Rate: 9.6 kbps 8 bits per character, 1 stop bit, no parity

° F (–20°

to 70

° C)

F-33610-A2-GB46-60 December 1996

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COMSPHERE 3600 Series Data Service Units

Table F-3

(3 of 3)

General COMSPHERE 3600 Series Technical Specifications

Specifications Criteria

DATA RATES Primary channel rates: 64, 56, 38.4, 19.2, 9.6, 4.8, and 2.4 kbps

Async/Sync rates: 64, 56, 48, 38.4, 32, 19.2, 18.8, 18.0, 16.8, 14.4, 12.0,

9.6, 9.2, 7.2, 4.8, 4.4, 2.4, 2.0, and 1.2 kbps Other asynchronous rates (e.g., 150, 300, 600, and 1800 bps) can be

obtained through oversampling Asynchronous rates support ITU V.14 extended rate range at 8 to 12 bits

per character, including the start and stop bit (+2.3, –2.5 percent overspeed/underspeed compensation at 10 bits per character)

PHYSICAL DIMENSIONS

3610 DSU

Height Width Depth

3611 DSU (modular or non-modular)

Height Width (thickness) Depth

Rear Connector Plate (2-port)

Height Width Depth (25-Pin V.35 Interface)

3000 Series Carrier

Height Width Depth

2.13 inches (5.4 cm)

7.63 inches (19.4 cm)

12.13 inches (30.8 cm)

7.13 inches (18.1 cm)

0.90 inch (2.3 cm)

13.40 inches (34.0 cm)

5.24 inches (13.3 cm)

0.88 inch (2.2 cm)

1.00 inch (2.5 cm)

10.50 inches (26.7 cm)

19.00 inches (48.3 cm)

14.00 inches (35.6 cm)

WEIGHT

3610 DSU 3610 DSU with DBM

3611 DSU (modular) 3611 DSU (modular) with DBM

3611 DSU (non-modular) 3611 DSU (non-modular) with DBM

Rear Connector Plate (2-port) 25-Pin EIA-232/25-Pin V.35

3000 Series Carrier (16 DSUs with DBMs plus SDU and fan module)

3.70 pounds (1.68 kg)

4.10 pounds (1.86 kg)

0.91 pound

1.34 pounds (0.61 kg)

1.05 pounds (0.48 kg)

1.50 pounds (0.68 kg)

0.13 pound

70.00 pounds (31.8 kg)

(0.41 kg)

(0.06 kg)

F-4 December 1996 3610-A2-GB46-60

Page 91

Table F-4

DSU Technical Specifications

echnical Specifications

Specifications

Criteria

APPLICATION Full- or half-duplex data transmission via point-to-point or multipoint DDS

network, or local area data channel

COMMUNICATION LINE Leased or private 4-wire DDS line DATA RATES

Digital Services (DDS, ASDS) LADS Clear Channel

2.4, 4.8, 9.6, 19.2, 38.4, 56, and 64CC kbps

2.4, 4.8, 9.6, 19.2, 38.4, 56, and 64 kbps 64 kbps (on a 72 kbps circuit) with the 64KScrambling configuration option

enabled

When timing is external (provided by the DTE), the DTE’s clock must be within these ranges.

64CC kbps 11 bps

kbps  9 bps

38.4

kbps  4 bps

19.2

kbps  5 bps

9.6

kbps  1 bps

4.8

kbps  0 bps

2.4

kbps  0 bps

DDS NETWORK INTERFACE

3610 DSU 3611 DSU

8-pin modular jack, USOC RJ48S (One or two) 50-pin connector, USOC RJ48T

DIAGNOSTIC INTERFACE

3610 DSU

Requires 3600 Series Hubbing Device which provides two 8-pin modular jacks

3611 DSU

Via the SDU in the COMSPHERE 3000 Series Carrier or DC-OUT via NMS adapter cable (for a tributary in the carrier)

NETWORK COMPATIBILITY

ANSI T1.410 –

1992 and

2.4, 4.8, 9.6, 19.2, 38.4, 56, and 64 kbps meeting the desired loss loop

AT&T Technical Reference 62310 – 1993 Integrated Network Corporation

19.2 kbps loop at levels of +6 dBm Compatibility Bulletin CB-INC-101 and Pacific Bell publications PUB L-780035-PB/NB and PUB L-780036-PB/NB

DSU COMPATIBILITY

Primary Channel

All Paradyne digital products and other products that are compliant with AT&T Technical Reference 62310 – 1987

Diagnostic Channel

Point-to-Point or Multipoint:

3600 Series — enhanced 3600 diagnostics (nondisruptive or disruptive) 3500 Series — 2600 diagnostics 2600 Series — 2600 diagnostics

Point-to-Point Only:

If a 3600 Series DSU is not used on both ends of the circuit or if the scrambler configuration option (64KScrambling) is

2500 Series — 2500 loopbacks

not enabled, the customer’s DTE must provide for the primary data’s ones (1s) density.

F-53610-A2-GB46-60 December 1996

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COMSPHERE 3600 Series Data Service Units

3600 Hubbing Device Technical Specifications

Table F-5

Specifications

APPLICATION Diagnostic interfaces for the Model 3610 DSU NETWORK MANAGEMENT

INTERFACES

NMS

PHYSICAL DIMENSIONS

Height Width (thickness) Depth

WEIGHT 0.13 pounds (0.06 kg)

Two 8-pin modular jacks. The 3600 Hubbing Device has a 6-inch cable that terminates in a 4-pin modular plug.

1.9 inches (4.8 cm)

0.9 inches (2.3 cm)

3.4 inches (8.6 cm)

Criteria

Table F-6

Async Terminal Technical Specifications

Specifications

APPLICATION ANSI X3.64/VT100 compatibility

Data Rate: 9.6 kbps 8 bits per character, 1 stop bit, no parity

Criteria

ASYNC TERMINAL CONNECTION

CC-to-DB25 cable One 4-pin modular jack to 25-pin D-subminiature EIA-232 connector.

F-6 December 1996 3610-A2-GB46-60

Page 93

Firmware Version Control

Firmware Version Control G-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Firmware Version Control

The DSU firmware version is reported to an NMS. To ensure NMS compatibility when the control and tributary have different firmware versions, the firmware version can be modified.

To determine the current firmware version, use the Health and Status Identity (ID) display. Refer to the Identity section of Chapter 3 and Table 3-2. When the control DSU firmware version is less than 7.24 but greater than 1.10, changes are required to the DSU tributary firmware version.

Information

To modify the control or tributary DSU firmware version, use the SW V Configuration Options, Table 4-4. Refer to the Firmware Version Control, Table G-1, for software versions.

ers configuration option in General

G-13610-A2-GB46-60 December 1996

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COMSPHERE 3600 Series Data Service Units

Set Tributary DSU s

Table G-1

Firmware V

ersion Control

If Control DSU is:

Release FW Version Release FW Version

2 3.xx 3 4.xx 3.20 2 3.xx 3.1 5.xx 3.21 2 3.xx 3.2 or 3.3 6.xx 3.22 2 3.xx 3.4 7.xx 3.23 2 3.xx 3.5 8.xx 3.24 3 4.xx 3.1 5.xx 4.40 3 4.xx 3 4.xx 3.4 7.xx 4.42 3 4.xx 3.5 8.xx 4.43

3.1 5.xx 3.1 5.xx Normal

3.1 5.xx

3.1 5.xx 3.4 7.xx 6.65

3.1 5.xx 3.5 8.xx 6.66

If Tributary DSU is:

3.2 or 3.3

Set Tributary DSU’s

SW V

6.xx 4.41

6.xx Normal

er. to:

3.2 6.2x 3.2 6.2x Normal

3.2 6.2x 3.3 6.33–6.99 Normal

3.2 6.2x 3.4 7.xx 6.65

3.2 6.2x 3.5 8.xx 6.66

3.3 6.33–6.99 3.3 6.33–6.99 Normal

3.3 6.33–6.99 3.4 7.xx 6.65

3.3 6.33–6.99 3.5 8.xx 6.66

3.4 7.xx 3.4 7.xx Normal

3.4 7.xx 3.5 8.xx Normal

3.5 8.xx 3.5 8.xx Normal

G-2 December 1996 3610-A2-GB46-60

Page 95

Glossary

ac Alternating current.

ACCUNET See ASDS.

active core The core that is transmitting data. For example, the DBM is the active core when the unit is in Backup

mode. In the case of a DBM-D, DBM-I, DBM-S, or DBM-V, the primary core and the active core are the same.

ADp Advanced Diagnostic protocol. An enhanced diagnostic communication protocol used with the 6700 and

6800 Series NMS and with certain front panel diagnostic functions.

aggregate rate The sum of the DTE rates.

alarm An abnormal condition affecting modems, multiplexers, and data services units, usually requiring

attention. Major alarms indicate a service disruption; minor alarms are less severe, but are indications of a developing problem.

alternate port The unused Port 1, either the V.35 or the EIA-232 interface, that provides an aggregate data path for an

external dial backup unit.

analog signal A type of signal composed of continuously variable values, used to transmit voice or data over telephone

lines.

ANSI American National Standards Institute. Sets standards for the US computer industry. ANSI participates in

defining network protocol standards.

apl Analog Private Line. Dedicated private line; not available for dialing.

ASDS ACCUNET Spectrum of Digital Services. An AT&T network service offering the alternatives of

fractional T1, 9.6, 56 or 64 kbps (clear channel) digital, and analog access to a digital core network.

ASPEN Asynchronous-to-Synchronous with Prism ENhancements chip. This is a chip upgrade that includes an

async/sync converter to support the Single-Port Async/Sync feature, which also supports the same functionality as earlier versions of the 3600 Series DSU.

async terminal This feature allows a device to be controlled from an async (asynchronous) terminal like an ASCII

terminal. When enabled, the async terminal menus emulate the front panel without being limited by the 2-line, 16-character liquid-crystal display (LCD), which can accommodate only three selections per screen.

asynchronous transmission

A data transmission that is synchronized by a transmission start bit at the beginning of a character (five to eight bits) and one or more stop bits at the end.

Glossary-13610-A2-GB46-60 December 1996

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COMSPHERE 3600 Series Data Service Units

auto backup A function of the dial backup module (DBM) or carrier-mounted dial backup unit, whereby the DSU

activates the DBM to reestablish a line automatically when a facility alarm is detected from the DDS network.

auto restoral A function of the DBM whereby the DSU automatically returns to the DDS network when service is

restored over the private line. On point-to-point circuits, the DSU test the integrity of the DDS network before switching data back to the private line.

backup See auto backup.

backbone network The main circuit that carries the data before it is split into extended circuits going to their final

destination.

bandwidth The range of electrical frequencies a device is capable of handling.

basic mode A mode of operation in which the single power module in the Central Office (CO) Power Unit supplies

power to the entire carrier.

B-channel Bearer Channel. ISDN 64 kbps bearer channel used for voice, circuit, or packet switched data.

BERT Bit Error Rate Test. A test used to analyze the network circuit. Both the control and tributary devices must

be connected to the network.

bis See V.32bis.

bit robbing Used with nondisruptive diagnostics when the data rate and port speed(s) are not equal.

bps Bits per second. Indicates the speed at which data is transmitted between devices.

BRI Basic Rate Interface. ISDN interface consisting of B-channel for information transfer and D-channel for

control and signaling.

bridge mode All ports are assigned to one digital-sharing group.

broadcast A method of transmission. The simultaneous transmission to two or more communicating devices.

callback directory pointer

The directory entry in an originating DBM consists of the answering DBM’s telephone number, a delimiting character, and a callback pointer. The pointer identifies the originating DBM’s telephone number in the answering DBM’s Backup Directory.

capacitance The property of an electric nonconductor that permits the storage of energy as a result of electric

displacement.

carrier The rack mounting that contains 17 slots: 1 SDU control slot and 16 device slots.

carrier-mounted A Model 3611 DSU that is designed for installation in a COMSPHERE 3000 Series Carrier and used at

central-site operations. Up to 16 DSUs can be installed per carrier, with 6 carriers per cabinet.

CBrdg Central-site digital bridge.

CC Control Channel. The diagnostic interface between an NMS and the SDU.

CCITT Consultative Committee on International Telegraphy and Telephony. An advisory committee established

by the United Nations to recommend communications standards and policies. See ITU-TSS.

channel A bidirectional DS0, voice, or data path, for electrical transmission between two or more points. Also

called a circuit, link, path, or facility.

Glossary-2 December 1996 3610-A2-GB46-60

Page 97

Glossary

cluster controller A device that controls communications processing for multiple terminals.

CMI Control Mode Idle. A control signal sent over the DDS line to indicate that the other end has RTS off and

no data to send.

COMSPHERE A Paradyne product family and a registered trademark.

configuration option Device software that sets specific operating parameters for the device. Sometimes referred to as straps.

connector module An interface that is shipped with a modular DSU with TDM or MCMP and installed onto the rear of the

COMSPHERE 3000 Series Carrier. The module contains six EIA-232 connectors, one for each port. The module also has a 26-pin high-density D-type connector located at the top to the module for V.35 operation on Port 1 or an aggregate data path.

control A device that is, for diagnostic purposes, at the logical head of a hierarchical network. It is the unit from

which tests and commands are issued to other units on the same circuit. There is only one control per link.

core A function of the circuit card that provides data transmission capability. With 3500 and 3600 Series

DSUs, there are two cores: one for the DSU and one for the DBM. The data can be transmitted through either (also see active core).

CPE Customer Provided Equipment. Terminal equipment supplied by either the customer or some other

supplier, which is connected to the telecommunications network.

crossed pairs When the DDS receive and transmit pairs are crossed, a facility alarm is generated.

CSA Canadian Standards Association.

CTS Clear to Send. A signal indicating that the device is ready for the DTE to transmit data.

Data mode One of two general operating modes; the other is Command mode. When in Data mode, the modem

considers any input from the computer to be data and transmits it across the telephone line to the remote modem.

dBm A decibel referenced to one milliwatt. This unit measures relative signal power.

DBM The optional Dial Backup Module for the 3600 Series DSU. This module provides an alternate data path

in case of failure of the digital connection. Four types of DBMs are available: V.32 14.4 kbps analog DBM and 2-wire Switched 56 DBM, 4-wire Switched 56 DBM, and ISDN digital DBMs.

DBM-D A carrier-mounted dial backup unit that provides automatic dial backup and service restoration of failed

digital circuits using 2-wire access over 56 kbps switched digital services. The unit functions as a DBM; does not function as a DSU.

DBM-I A carrier-mounted dial backup unit that provides automatic dial backup and service restoration of failed

digital circuits using an ISDN U-interface with two digital channels. The unit functions as a DBM; does not function as a DSU.

DBM-S A carrier-mounted dial backup unit that provides automatic dial backup and service restoration of failed

digital circuits using 4-wire access over 56 kbps switched digital services. The unit functions as a DBM; does not function as a DSU.

DBM-V A carrier-mounted V.32 dial backup unit that provides automatic dial backup and service restoration of

failed digital circuits over the PSTN. The unit functions as a DBM; does not function as a DSU.

DBM-X A carrier-mounted dial backup unit that provides automatic dial backup and service restoration of failed

digital circuits. Primary core is enabled; does not function as a DSU.

Glossary-33610-A2-GB46-60 December 1996

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COMSPHERE 3600 Series Data Service Units

DBU Dial Backup Unit. A device used for establishing a data channel on the public telephone network and for

switching data traffic there during a failure of the private line data channel.

D-channel The ISDN channel that carries signaling information to Control call setup.

DC Diagnostic Channel. The diagnostic interface between two network devices, used to extend the NMS

diagnostics to downstream devices.

DCE Data Communications Equipment. The equipment that provides the functions required to establish,

maintain, and end a connection. It also provides the signal conversion required for communication between the DTE and the network.

DCP Diagnostic Control Panel. See front panel.

DDD Direct Distance Dialing. Telephone exchange service, the public switched telephone network (PSTN) that

enables a telephone service user to access telephone lines without operator assistance.

DDS Digital Data Service, such as DATAPHONE Digital Service or ACCUNET Spectrum of Digital Services,

that provides digital (not dial) communication circuits.

dedicated backup A dial backup module (DBM) assigned to a particular DSU that is continually available for service

restoration. The DBM switches to Dial Backup mode automatically when the DDS line fails; no switching is required. An external dial backup unit can also provide dedicated backup.

diagnostic path extension

A method used by an NMS to extend diagnostic control to devices other than a tributary 3610 DSU at a remote location. It uses one multiplexed channel to provide an external 1200 bps asynchronous transparent path for the NMS’s control channel.

dial backup module Ensures continuity of service if a DDS connection fails. Detects network failure, performs dial backup

functions, and automatically restores the DDS data path when the network returns to service. See DBM.

dial network See PSTN.

dial string A sequence of up to 36 characters that the DBM can send into the dial network to establish a call to a

remote backup device. It consists of a telephone number and may include other information, such as a callback directory pointer.

digital bridging Provides the ability for dial backup of a multipoint configuration by bridging the signal on the digital side.

digital sharing Sharing device enabled allows TDM to backup MCMP use digital-sharing groups.

digital signal A signal composed of only two discrete values (representing the binary digits 0 and 1), used to transfer

data between a locally attached DTE and a device.

DIP switch Dual In-line Package switch.

DMI Data Mode Idle. Refers to a sequence of ones transmitted or received on the DDS or switched 56 kbps

network. Data Mode Idle operation is recommended for point-to-point applications.

downstream In extended networks, the direction in which diagnostic messages flow from the diagnostic control site to

any intermediate links and then to the final tributary modem.

DPII DATAPHONE II. The name of both a family of Paradyne NMS products (System Controller, Diagnostic

Console, and Network Controller), and the network management protocol used by these products.

DS0 Digital signal level 0 (zero). A 64 kbps digital telecommunications signal or channel.

DSD Digital sharing device.

Glossary-4 December 1996 3610-A2-GB46-60

Page 99

Glossary

DSR Data Set Ready. A signal from the modem to the DTE that indicates the modem is turned ON and

connected to the DTE.

DSU Data Service Unit. Data communications equipment that provides an interface between the DTE and the

digital network.

DTE Data Terminal Equipment. The equipment, such as a computer or terminal, that provides data in the form

of digital signals.

DTR Data Terminal Ready. A signal from the DTE to the modem, sent via Pin 20 of the EIA-232 interface, that

indicates the DTE is turned ON and connected to the modem.

EBrdg Extended digital bridge.

EDP Escape-based diagnostic protocol.

EIA/TIA Electronics Industries Association/Telecommunications Industry Association. This organization provides

standards for the data communications industry to ensure uniformity of the interface between DTEs and DCEs.

EIA/TIA-232-E An Electronic Industries Association’s standard defining the 25-pin interface between data terminal

equipment and data communications equipment.

elastic store A form of buffering between collocated data communications devices in complex networks; required to

maintain timing synchronization for data transmission in the entire network.

End to End Test A pattern test run in both directions simultaneously on local and remote devices.

EPROM Erasable programmable read-only memory.

errored second A performance measurement reported during Digital Test or Transmit Test Pattern that is defined as a

second in which at least one error has been detected.

extended network The extension of a circuit where the tributary DCE is connected to a downstream (extended) control DCE.

FA Facility Alarm. A failure reported to the front panel when there is a facility or device failure.

FacB Factory Bridge. Factory default configuration option settings.

FacC Factory Control. Factory default configuration option settings.

FacT Factory Tributary. Factory default configuration option settings.

factory defaults A predetermined set of configuration option settings for a specific set of hardware features.

fallback Retraining at a lower rate or speed.

fast select An extended data field used on some packet types for x.25 facility.

FCC Federal Communications Commission. Board of Commissioners that regulates all U.S. interstate,

intrastate, and foreign electrical communication systems that originate from the United States.

FEP Front-End Processor. A communications computer associated with a host computer that manages the lines

and routing of data through the network.

ferrite choke A ferrite choke is attached to a cable to reduce electromagnetic interference and ensure compliance with

FCC Part 15 Rules.

Glossary-53610-A2-GB46-60 December 1996

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COMSPHERE 3600 Series Data Service Units

filtering The 3600 Series DSU and hardware features present menus and selections based on features installed and

enabled. Filtering is not displaying options for hardware that is not installed.

flex The flex option is available for the Model 3610 with TDM or MCMP. When installed, each port can be set

independently as either an EIA-232 or V.35 interface.

framing A control procedure used with multiplexed digital channels where bits are inserted so the receiver can

identify time slots allocated to each subchannel.

front panel The front panel of a device that continuously provides status information about the device’s operation and

allows an operator to manage its operation. This is a generic term used for both the standalone and carrier-mounted models.

full backup If the DSU/DBM detect a network failure, the DBM can automatically initiate dial backup and each

tributary communicates with the control DSU through a backup connection.

full-duplex The capability to transmit in two directions simultaneously.

Hz Hertz. A unit of frequency that equals one cycle per second.

IBF In-band framing. See bit robbing.

IEC InterExchange Carrier. A company that provides inter-LATA (local exchange carrier) telecommunication

services, like AT&T, MCI, and SPRINT. Access to these services can be provided through DDS dedicated channels, T1.5 dedicated access channel, or digital switched access (DSA) channels.

IOC ISDN Ordering Code.

ISDN Integrated Services Digital Network. Provides capability to carry voice and data while sending signaling

on the D-channel.

ITU-TSS International Telecommunications Union Telecommunications Standardization Sector. An advisory

committee established by the United Nations to recommend communications standards and policies and allocate transmission frequencies. Before March, 1993, it was called CCITT.

kbps Kilo (1,000) bits per second.

LADS Local Area Data Set is used to provide a point-to-point link between two devices (also called LDM).

LATA Local Area Transport Area. A region served by a local exchange carrier (LEC) that consists of one or

more area codes.

LCD Liquid Crystal Display. Thin glass plates containing liquid crystal material. When voltage is applied, the

amount of light able to pass through the glass plates is altered so that messages can be displayed.

LDM Limited-Distance Modem (also called a local area data set or LADS).

LEC Local Exchange Carrier. A company that provides intra-LATA (local exchange carrier)

telecommunication services, like NYNEX or Bell South.

LED Light Emitting Diode. A light or status indicator that glows in response to the presence of a certain

condition (e.g., an alarm).

link configuration Provides a communication path between point-to-point or multipoint units for compatibility with network

operations.

Glossary-6 December 1996 3610-A2-GB46-60