Paradyne 3611 User Manual

COMSPHERE

3600 Series Data Service Units

Models 3610 and 3611

Time Division Multiplexer, Multichannel Multipoint,

and Digital Bridge Options

Supplement

Document No. 3610-A2-GB48-50

Printed on recycled paper

September 1996

COMSPHERE 3600 Series Data Service Units

COMSPHERE 3600 Series Data Service Units Models 3610 and 3611

Time Division Multiplexer, Multichannel Multipoint, and Digital Bridge Options Supplement 3610-A2-GB48-50

6th Edition (September 1996)

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

Trademarks

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

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 September 1996 3610-A2-GB48-50

Preface

About This Supplement iii. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

How to Use This Supplement iii. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Product-Related Documents iii. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1. Product Introduction

TDM/MCMP Common Capabilities 1-1. . . . . . . . . . . . . . . . . . . . . . . . .

TDM Capability 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

MCMP Capability 1-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

DSU with Digital Bridge Capability 1-3. . . . . . . . . . . . . . . . . . . . . . . . .

LPDA-2 with TDM or MCMP 1-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2. TDM/MCMP Installation and Setup

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

Installing the DSU 2-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Hardware Settings 2-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Opening the DSU 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Separating the DSU from the TDM or MCMP 2-3. . . . . . . . . . . . . . .

Changing the DSD Option Card Setting 2-4. . . . . . . . . . . . . . . . . . . .

Reassembling the DSU 2-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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

Power-Up Routine 2-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

DTE Connections 2-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Reconfiguring Ports 2-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Network Verification Testing 2-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

i3610-A2-GB48-50 September 1996

COMSPHERE 3600 Series Data Service Units

3. Front Panel Operation

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

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

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

Menu Structure 3-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Menus and Modes of Operation 3-4. . . . . . . . . . . . . . . . . . . . . . . . . .

Local/Remote Branch Menus 3-4. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Status Branch 3-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Health and Status 3-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

DTE Status 3-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Circuit Quality 3-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Identity 3-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Terminal Power 3-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Backup Branch 3-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Digital Bridging 3-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Test Branch 3-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Abort 3-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Device T est 3-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Loopbacks 3-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Digital T est 3-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

End-to-End Test 3-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Bit Error Rate Test 3-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Dial T one Test 3-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Configuration Branch 3-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Options 3-11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Poll List 3-11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Menu 3-11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Control Branch 3-12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Transmitter Control 3-12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

LEDs 3-12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

External Leads 3-12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Reset 3-12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Remote Mode 3-12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4. Configuration Option Tables

Overview 4-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Configuration Option T ables 4-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Configuration Option T ables Format 4-2. . . . . . . . . . . . . . . . . . . . . .

Appendices

A. Data Service Unit Menu A-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

B. Configuration Worksheets B-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

C. Configuration Examples C-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

D. Troubleshooting and Front Panel Messages D-1. . . . . . . . . . . . . . .

E. Technical Specifications E-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Index

ii September 1996 3610-A2-GB48-50

Preface

About This Supplement

This supplement provides basic information to get you started using your COMSPHERE 3600 Series Data Service Unit (DSU) with a Time Division Multiplexer (TDM) or Multichannel Multipoint (MCMP) option installed. The supplement also provides a summary of TDM and MCMP capabilities, along with the unit’s capabilities when it operates as a digital bridge.

It is assumed that you are familiar with the functional operation of data communications equipment.

How to Use This Supplement

Chapter 1 provides a general overview of the TDM,

MCMP, and digital bridge capabilities for the 3600 Series DSU.

Chapter 2 explains the set up of your Model 3610 DSU

with TDM or MCMP circuit card. T o install a Model 3611 DSU with TDM or MCMP, refer to the COMSPHERE 3000 Series Carrier, Installation Manual.

Chapter 3 provides an overview of the front panel with

TDM or MCMP and the DSU’s status indicators.

Chapter 4 provides the basics of setting or changing

configuration options for TDM, MCMP, and digital bridging. The configuration option tables supplement the DSU tables in the User’s Guide and the DBM tables in the DBM Options Supplement.

Appendix A provides MUX factory default

configuration options and the DSU’s menu structure. Refer to the menu tree as you proceed through the menu from the front panel or SDCP if you have a Model 3611 DSU.

Appendix B provides MUX configuration worksheets

to use during planning.

Appendix C contains TDM, MCMP, and digital bridge

sample configurations.

Appendix D provides troubleshooting and a list of

MUX configuration error messages that may appear on the front panel.

Appendix E contains technical specifications.

Refer to the User’s Guide for an extensive Glossary and list of acronyms.

Product-Related Documents

For additional 3600 Series features, refer to the:

• COMSPHERE 3600 Series Data Service Units,

Models 3610 and 3611, User’s Guide, for basic

Data Service Unit (DSU) information and a product-related documentation table: Document No. 3610-A2-GB46.

• COMSPHERE 3600 Series Data Service Units,

Models 3610 and 3611, Dial Backup Module Options Supplement for the DBM features:

Document No. 3610-A2-GB49.

iii3610-A2-GB48-50 September 1996

Product Introduction

TDM/MCMP Common Capabilities 1-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

TDM Capability 1-2 MCMP Capability 1-3

DSU with Digital Bridge Capability 1-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

LPDA-2 with TDM or MCMP 1-4

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ă ă

TDM/MCMP Common Capabilities

The TDM/MCMP option is an additional circuit card. TDM capability allows up to six independent ports to share one standard digital point-to-point facility. MCMP capability allows up to six ports to share one standard 56 kbps multipoint facility.

The TDM option can be software-defined to provide one of the following:

• TDM

• Digital bridge capability

The MCMP option can be software-defined to provide one of the following:

• MCMP

• TDM

• Digital bridge capability

Common features are:

• Async/Sync conversion: Provides point-to-point

and multipoint asynchronous-to-synchronous data conversion for DTE ports for both EIA-232 and V.35. The DSU can send asynchronous data over a synchronous network.

• FEP port sharing: Provides a method of

connecting a front-end processor (FEP) to two consecutive ports to broadcast the same message over the network and the shared ports. Up to three separate FEP port-sharing groups can be selected. Each group consists of two adjacent ports (1 and 2, 3 and 4, 5 and 6).

• Elastic store per port: Provides a transmit elastic

store buffer for each port to support extended circuits. Supports both digital and analog extensions.

• Switched-carrier emulation: Provides optional

switched-carrier emulation for each port for both inbound (toward the control DSU) and outbound (toward the tributary DSU) directions.

NOTE

The V.34 DBM does not support applications requiring Ext to RXC DBM transmit clock source configurations, including:

• Multipoint backup — Central-Site Bridge — Extended Site Bridge — FEP Backup Modes

• Tail circuits

1-13610-A2-GB48-50 September 1996

COMSPHERE 3600 Series Data Service Units

TDM Capability

TDM capability allows up to six independent ports to share one standard digital point-to-point facility. Additional TDM capability includes the following features:

• Three standalone versions: Model 3610 has three

TDM models:

— DSD (digital sharing device) — Flex — Standard

• Flex option: There are two versions of the

TDM/Flex standalone model:

— 2-port TDM/Flex — 6-port TDM/Flex

With either flex option installed, each port can be set independently as either an EIA-232 or V.35 interface.

• Port capacity: Model 3610 provides:

— Up to six EIA-232 or V.35 ports with DSD or

Flex models

• Data rates: Operates up to 64 kbps full-duplex.

• Primary network interface: The alternate Port 1

on the DSU provides an internal aggregate data stream. When the Network Interface configuration option is set to forced on, the unused V.35 or EIA-232 interface functions as an external TDM. A connection can be made to any multiplexer or DSU/CSU.

When the DSU powers up, data automatically switches to the alternate Port 1. No DDS connection is required. Any cluster controller requiring subrate can be supported at a remote site. Using the alternate Port 1 for the network interface supports:

— DBM, TDM, and MCMP options — Disruptive and Nondisruptive diagnostics — Rate Adaption and In-Band Framing — Aggregate data rates of 64, 56, 19.2, 9.6, 4.8,

and 2.4 kbps

• Digital bridge: Performs digital bridge functions

and supports many applications, including dedicated multipoint dial backup and multipoint LADS operation.

— An EIA-232 or V.35 Port 1 option and five

EIA-232 ports for the Standard model

Model 3611 uses the Standard model and a six-port DTE connector module. The connector module includes six 25-pin DTE connectors and a 26-pin high-density connector for the V.35 alternate Port 1 option. Model 3611 does not have V.35 for Ports 2–6.

• Port speeds: Individual TDM ports (1 through 6)

can be set to a variety of speeds. The sum of the port speeds cannot exceed the DSU data rate.

• Digital sharing: Allows two groups of consecutive

ports to share the same TDM channel. All ports in a digital-sharing group operate at the same speed and receive the same data.

• Flexible device control: Provides the same

diagnostic capabilities as a point-to-point 3600 Series DSU without the TDM option. Allows control of the TDM option from the front panel, an async terminal, or a 6700 or 6800 Series NMS.

• Point-to-point backup: Allows a DSU with TDM

to have a DBM installed for point-to-point dial backup. If backup is at a different port speed than the DSU’s port speed, TDM operation automatically changes to a second predefined port speed to support dial backup operation at a lower port speed.

1-2 September 1996 3610-A2-GB48-50

Product Introduction

MCMP Capability

MCMP capability allows up to six independent application programs to share one standard 56 kbps multipoint facility. MCMP capability provides the following features:

• Channel capacity: Provides up to eight channels,

which can be matched to all enabled ports.

• Three standalone versions: Model 3610 has three

MCMP models:

— DSD (digital sharing device) — Flex — Standard

• Flex option: There are two versions of the

MCMP/Flex standalone model:

— 2-port MCMP/Flex — 6-port MCMP/Flex

With either flex option installed, each port can be set independently as either an EIA-232 or V.35 interface.

• Port capacity: Model 3610 provides:

— Up to six EIA-232 or V.35 ports with DSD or

Flex models

— An EIA-232 or V.35 Port 1 option and five

EIA-232 ports for the Standard model

• Multipoint dial backup: Provides multipoint

service restoration. When Network Interface configuration option is set to AggSw, the DSU provides an internal aggregate data stream for diagnostics and framing on alternate Port 1. The alternate Port 1 can be connected to an extended bridge.

NOTE

The V.34 DBM does not support applications requiring Ext to RXC DBM transmit clock source configurations, including:

• Multipoint backup — Central-Site Bridge — Extended Site Bridge — FEP Backup Modes

• Tail circuits

DSU with Digital Bridge Capability

Digital bridging is used primarily for dedicated multipoint dial backup. A digital data service (DDS) multipoint network can be backed up with:

• V.32 analog DBM

• Switched 56 kbps calls between the central-site and

remote-site DBMs that are connected by the digital bridge

• ISDN (Integrated Services Digital Network)

• Digital sharing: Allows up to three digital-sharing

devices at each tributary by assigning channels to more than one port. All ports operate at the same speed and receive the same data.

MCMP capability allows digital sharing and multiplexing simultaneously at any tributary site.

• Number of addressable devices: Supports up to

40 tributary DSUs or 20 tributary DSUs with DBMs, each equipped with an MCMP circuit card.

• Channel speeds: Speeds of the individual channels

can be set to a variety of speeds. The sum of the channel speeds cannot exceed 48 kbps.

The digital bridge capability is dedicated to a single DSU. The DTE connected to the DSU is usually the controlling DTE of a multipoint network. Configure either the TDM or MCMP option to provide the digital bridge capability.

The digital bridge capability, when used to support dedicated multipoint dial backup, includes the following features:

• Number of tributaries: Provides dedicated

multipoint dial backup for up to 20 tributary DSUs. Four additional DSUs with TDMs are required for each configured extended bridge (EBrdg).

1-33610-A2-GB48-50 September 1996

COMSPHERE 3600 Series Data Service Units

• Partial and full backup: Provides multipoint dial

backup for both partial and full backup on DDS multipoint circuits, depending on configuration.

• Security: DBMs provide multiple levels of call

setup security.

• 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.

LPDA-2 with TDM or MCMP

The SNA Diagnostic Interface uses the Release 2 Link Problem Determination Aid (LPDA-2) protocol. The LPDA-2 protocol is installed on the DSU circuit card. When enabled:

• With TDM or MCMP, LPDA-2 is only supported

on Port 1.

• For digital sharing, all ports are supported.

1-4 September 1996 3610-A2-GB48-50

TDM/MCMP Installation and Setup

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

Installing the DSU 2-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Hardware Settings 2-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Opening the DSU 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Separating the DSU from the TDM or MCMP 2-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Changing the DSD Option Card Setting 2-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Reassembling the DSU 2-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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

Power-Up Routine 2-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

DTE Connections 2-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Reconfiguring Ports 2-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Network Verification Testing 2-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Before You Begin

The Model 3610 DSU with the TDM or MCMP option is delivered with default hardware settings, factory default configuration option settings, and factory-installed software.

Please note the following:

• Port 1 of the DSU is preconfigured to operate with

the TDM or MCMP capability enabled. The DSU includes the factory default configuration option settings for FacT with some defaults based on hardware. Refer to T able A-1 for MUX configuration option default settings.

• For the Model 3610, all additional ports are

disabled and preconfigured for EIA-232 port interface operation. Each port configured for V.35 needs an interconnect cable (feature number 3000-F1-510).

• Once a DSD model is powered up, you can verify

the port interface switch setting through the right side of the back panel.

— If set for EIA-232, you will see a green light. — If set for V.35, you will see a yellow light.

Installing the DSU

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.

Hardware Settings

HANDLING PRECAUTIONS

FOR

ST ATIC-SENSITIVE DEVICES

This product is designed to protect sensitive components from damage due to electrostatic discharge (ESD) during normal operation. When performing installation procedures, however, 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 representative.

2-13610-A2-GB48-50 September 1996

COMSPHERE 3600 Series Data Service Units

MCMP/Flex

TDM/Flex or

TDM/Flex and MCMP/Flex models are available with two or six ports. When your firmware version is 6.33 or greater, each port can be set individually for either EIA-232 or V.35 using the front panel, an async terminal, or an NMS.

Based on your model, you may need to perform one of following procedures. Use ID from the Status branch to obtain the firmware version.

If your

model is a

6-port . . .

TDM/Flex or with firmware

6.33 or greater

TDM/Flex or MCMP/Flex with firmware less than

6.33

And the

EIA232

setting . . .

Is correct Go to the

section, page 2-4.

DSU

Needs to be changed

Is correct Go to the

Needs to be changed

Go to the

section, page 2-4

DSU

and the

section, page 2-5.

Ports

DSU

section, page 2-4.

Change the S1 switch setting; refer to Document No. 3610-A2-GZ51,

TDM/Flex and MCMP/Flex Installation Instructions.

Then . . .

Powering Up the

Reconfiguring

Powering Up the

Opening the DSU

NOTE

If the unit is already installed, disconnect all cables, including the power source, before opening the DSU.

Follow this section to change a TDM/DSD or

MCMP/DSD model from:

• EIA-232 interface to V.35 interface, or

• V.35 interface to EIA-232 interface

Use a small flat-head screwdriver to release the four snap tabs holding the base in place. Remove the cover. Do not allow any cables to pull free from the inside front panel connectors.

With TDM or MCMP

TDM/DSD or MCMP/DSD

Is correct Go to the

section, page 2-4.

DSU

Needs to be changed

Change the option card to set all six ports; start with next section,

DSU

Powering Up the

Opening the

COMSPHERE 3610

Snap Tabs

496-14707-0

2-2 September 1996 3610-A2-GB48-50

TDM/MCMP Installation and Setup

Separating the DSU from the TDM or MCMP

Follow this procedure to separate the DSU circuit card

from the TDM or MCMP (refer to Figure 2-1).

Procedure

1. Disconnect the keypad flat cable from the DSU circuit card by squeezing the latches on each side of the cable connection and pulling up on the keypad flat cable.

Keypad

Flat

Cable

Screw

2. Disconnect the LCD flat cable by working the cable free of the connector.

3. Disconnect the TDM or MCMP flat cable.

4. Unscrew the three screws holding the DSU circuit card in place.

5. Lift the DSU circuit card from the base and set aside.

TDM or MCMP

Flat Cable

LCD

Flat

Cable

Screw

DSU

Circuit Card

Snap

Tabs

Expanded

Base

Screw

Snap

Tabs

495-13846c

Figure 2-1. Disassembling a TDM or MCMP DSU

2-33610-A2-GB48-50 September 1996

COMSPHERE 3600 Series Data Service Units

Changing the DSD Option Card Setting

For the TDM/DSD or MCMP/DSD model, use the following procedure to change the setting from EIA-232 to V.35 or from V.35 to EIA-232.

Procedure

1. Work the option card free of its connector.

Option

Card

THIS SIDE FACES REAR FOR V.35

LED 1

(Green

EIA-232)

496-13845-0

Rear

Panel

LED 2

(Yellow

V.35)

Powering Up the DSU

CAUTION

The power cord contains a 3-wire grounding-type plug which has 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.

2. Turn the card around and re-insert. In the example

above, the card reads THIS SIDE FACES REAR FOR V.35.

3. Continue with next section, Reassembling the DSU.

Reassembling the DSU

Procedure

1. Reinstall the DSU circuit card, using the three screws.

2. Reconnect the three flat cables:

— TDM/MCMP — Keypad — LCD

3. Align the rear panel and four snap tabs. Replace the cover over the expanded base, allowing the four tabs to snap into place.

Procedure

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

POWER

LINE

BACKUP

CC/DC

PORT 5 PORT 3

PORT 6 PORT 4 PORT 2

V.35

EIA 232

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

495-1471

2-4 September 1996 3610-A2-GB48-50

TDM/MCMP Installation and Setup

Power-Up Routine

When you apply power the first time, the DSU

performs a power-up routine and:

• Determines what hardware options are installed.

This may include MUX to represent TDM or MCMP.

• Automatically runs a Device T est on the DSU and

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

• If a TDM or MCMP is installed, MUX appears as

Pass or Fail on the LCD.

Refer to your User’s Guide for power-up messages and steps for saving and changing configuration options. Refer to Table D-1 for Configuration Error messages.

If a Fail message appears or an installed hardware option does not appear, see Appendix D, Troubleshooting

and Front Panel Messages. Refer to Document No.

3610-A2-GB46 for DSU troubleshooting and Document No. 3610-A2-GB49 for DBM troubleshooting.

Reconfiguring Ports

If you have a TDM/Flex or MCMP/Flex with a firmware version 6.33 or greater, you can configure each port for either EIA-232 or V.35 interface compatibility from the front panel, an async terminal, or an NMS.

To set a port for EIA-232 or V.35 operation:

Procedure

1. From the Home screen, select Local (F1). The

following screen appears on the LCD.

Local Mode: Stat Bckup Test

Confg Ctrl

2. Press the

key until Confg appears.

DTE Connections

Make the DTE connections as described in the User’s

Guide, Document No. 3610-A2-GB46.

In a TDM or MCMP application, all ports default to EIA-232 port interface operation. For TDM/Flex or MCMP/Flex, Ports 1 through 6 can be set individually to EIA-232 or V.35 by using the MUX port configuration options.

For an EIA-232 connection with 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.

When Port 1 requires a speed higher than 19.2 kbps, it is recommended that the port interface be set to V.35. An interconnect cable is required for every port (2 through 6) that is set to V.35 interface.

3. Select Confg (Configuration branch). The

Configure screen appears.

4. Select Opts. The Load from screen appears.

5. Select Activ (F1). The Edit/Save screen appears.

Edit/Save: SAVE DSU Diag

DBM Gen Bkup MUX PrtSp

LPDA

2-53610-A2-GB48-50 September 1996

COMSPHERE 3600 Series Data Service Units

6. Press the or key to scroll the MUX option set into view.

7. Press the function key directly below MUX. The Change MUX Opts screen appears.

Change MUX Opts: Copy Setup Prt1

Prt2 Prt3 Prt4 Prt5 Prt6

8. Select a port:

• Any of the installed ports, Prt1 through Prt6,

for a 6-port TDM/Flex or MCMP/Flex

• Prt1 or Prt2 for a 2-port TDM/Flex or

MCMP/Flex

9. Press Next or Prev and select EIA-232 or V.35.

Network Verification Testing

Perform verification testing after any installation.

Procedure

1. Request a device Identity report from each tributary to ensure that the DSU is addressed properly (ID from the Status branch).

NOTE

The Model 3610 is delivered with its network address set to

254.

2. Perform a Digital T est on the DDS circuit to ensure that the network is functioning (DT from the Test branch).

Perform a Digital T est on each:

— Active port for TDM

DTE Port: EIA232 Next EIA232 V.35

If you are . . .

Selecting another port Change MUX Opts,

Finished The Edit/Save screen.

Then return to . . .

Step 7.

10. Select SAVE.

— Tributary DSU for MCMP

NOTE

control DSU

can originate a Digital Test in a point-to-point or multipoint network. Use Position in the Diagnostic General configuration option table to set a unit to Cntrl.

tributary DSU

can originate a Digital Test in a point-to-point network only, provided the configuration option Respond to Remote Digital Loopback (RespondRDL) is enabled in the control.

For additional verification steps, refer to Appendix D,

Troubleshooting and Front Panel Messages.

2-6 September 1996 3610-A2-GB48-50

Front Panel Operation

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

Front Panels 3-2

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

Menu Structure 3-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Menus and Modes of Operation 3-4 Local/Remote Branch Menus 3-4

Status Branch 3-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Health and Status 3-5

DTE Status 3-5

Circuit Quality 3-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Identity 3-5 Terminal Power 3-5

Backup Branch 3-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Digital Bridging 3-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Test Branch 3-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Abort 3-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Device Test 3-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Loopbacks 3-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Digital Test 3-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

End-to-End Test 3-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Bit Error Rate Test 3-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Dial Tone Test 3-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Configuration Branch 3-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Options 3-11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Poll List 3-11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Menu 3-11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Control Branch 3-12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Transmitter Control 3-12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

LEDs 3-12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

External Leads 3-12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Reset 3-12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Remote Mode 3-12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Device Health and Status 3-5

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Central-Site Bridge 3-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Extended Bridge 3-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Local Loopback 3-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

DTE Loopback 3-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Digital Loopback 3-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Remote Digital Loopback 3-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ă ă

ă ă ă

ă ă

3-13610-A2-GB48-50 September 1996

COMSPHERE 3600 Series Data Service Units

Overview

You can manage a 3600 Series DSU from:

• The front panel

• An async terminal

• A 6700 or 6800 Series NMS

The front panel menus are organized as a branching hierarchy or menu tree. Refer to these reference materials as you proceed through the DSU’s menus.

• Appendix A contains this menu tree.

• Chapter 4 presents MCMP, TDM, and digital bridge

configuration option tables.

• Appendix B contains Configuration Worksheets.

Front Panels

The front panel is the user interface to the DSU. There are two types of front panels:

Front panel operation does not vary with the addition of DSU options (DBM, TDM, MCMP, or SNA Diagnostic Interface). However, menu or selection displays may vary based on installed options. Refer to the User’s Guide for basic front panel, display, keypad, and menu function information.

A Model 3611 DBM with Primary Core set to Yes does not function as a DSU and is labeled with an alpha code: DBM-D, DBM-I, DBM-S, and DBM-V. A DBM-X is a Model 3611 DBM-D, DBM-I, DBM-S, or DBM-V. Refer to Document No. 3610-A2-GB49 for DBM details. Any MUX function is operational with a DBM-X.

Network/

Device Alarm

Test Mode

Dial Backup

Status

Ok Alrm Test Dial

Status

Ok Alrm

Status

Ok Alrm

• Front panel on the Model 3610 DSU (see

Figure 3-1).

• SDCP (shared diagnostic control panel) used with

the Model 3611 DSU (see Figure 3-2) in a COMSPHERE 3000 Series Carrier.

LCD

COMSPHERE 3610

Network/Device

Alarm

Alrm Test Dial TXD RXD

Test

Mode

Dial

Backup

RTS CTS DTR LSDDSR

105 106 108 109104103

DTE Status

Indicators

107

496-12347b-06

Figure 3-1. Model 3610 Front Panel

DTE

Status

Indicators

SDCP

Indicator

(Front Panel)

Figure 3-2. Model 3611 DSU,

TDM and MCMP Faceplates

103

TXD

104

RXD

105

RTS

106

CTS

107

DSR

108

DTR

109

LSD

Front Panel

Spkr

Multirate

DSU

3611

Port

3600

1 2 3 4 5 6

Spkr

TDM

1 2 3 4 5 6

Port

Spkr

MCMP

3600

496-14720-0

3-2 September 1996 3610-A2-GB48-50

Front Panel Operation

Status Indicators

The status indicators on the Model 3610 DSU’s front panel and on the Model 3611 DSU’s faceplate continuously provide information on the current operating condition of the DSU.

Refer to the COMSPHERE 3000 Series Carrier Installation Manual for SDCP status indicator tables; these are unchanged by the presence of a TDM or MCMP circuit card.

The status indicators of the carrier-mounted Model 3611 DSU are spread across the SDCP, DSU, TDM, or MCMP faceplates. Refer to T able 3-1 for TDM

and MCMP status indicators and descriptions.

Table 3-1

Model 3611 TDM and MCMP Status Indicators LED

OK Green Health and status indicator: TDM or

Alrm Red Health and status indicator: There is

Port 1, 2, 3, 4, 5, or 6

Color Description

MCMP operation is normal. Indicator flashes two times per second if a message is present.

an alarm in the TDM or MCMP hardware, firmware, or a corrupted configuration.

A voltage spike on the power line or momentary loss of power may cause an alarm. The DSU automatically reloads the TDM or MCMP configuration options. When the reload has completed, the Alrm LED goes Off and the TDM or MCMP OK LED comes ON.

Green TDM or MCMP mode: Shows ports

currently being monitored. The status of the port’s leads is displayed on the faceplate of the associated DSU.

One of the six ports can be monitored at any given time; the port to be monitored is selected at the SDCP.

When Network Interface is set to aggregate switch (AggSw), all ports are monitored and all LEDs will be ON.

Bridge mode: The port LEDs perform differently. The LEDs indicate which ports had RTS ON during the last second.

When the port is connected to a DCE device, the port RTS becomes the received LSD signal of the DCE device. The LEDs indicate which ports had upstream activity during the last second.

3-33610-A2-GB48-50 September 1996

COMSPHERE 3600 Series Data Service Units

Menu Structure

A 3600 Series DSU comes factory-loaded with default configuration settings:

• Model 3610 DSU is configured as a tributary

• Model 3611 DSU is configured as a control

• DSU with TDM comes configured for TDM

• DSU with MCMP comes configured for MCMP

Menus and Modes of Operation

A DSU without TDM or MCMP operates in Basic mode. A DSU equipped with TDM or MCMP can operate in one of several modes. The mode of operation affects which menus appear and the selections available within the menus. Use the MUX Function configuration option to set the mode of operation.

Access to all network management tasks from the front panel begins at the top-level menu, the head of the menu

hierarchy . Press the to return to the top-level menu.

key from anywhere in the menu

TOP-LEVEL MENU

Each selection leads to submenus. Factors determining

which selections or options are available are:

• DSU is in Display mode and operating in DSU

mode

• DSU has Full mode disabled using Menu

configuration option

• DSU is a control or tributary

• Selecting the Local or Remote branch from the

top-level menu

• DBM is installed

• TDM or MCMP is installed

The following sections highlight the front panel’s menu

and operation for TDM, MCMP, or Bridge mode.

Status Branch

The Status (Stat) branch includes reports on the:

• Health and status of the DSU, TDM, MCMP,

and DBM

• DTE interface

Stat

Local

Bckup

Remot

Address

Test

Msgs

Confg

495-12970

Local/Remote Branch Menus

The Local branch menu has five branches; the Remote branch has four (Bckup is not available):

• Status (Stat) branch

• Backup (Bckup) branch

• Test branch

• Configuration (Confg) branch

• Control (Ctrl) branch

Ctrl

• Circuit Quality

• Identity Report

• Terminal Power

Local

Bckup

Stat

H/S DTE CircQ ID TPwr

Port

Select

Devic Expan Subn

TOP-LEVEL MENU

Remot

Address

Test

Msgs

Confg

Ctrl

496-12970-02

3-4 September 1996 3610-A2-GB48-50

Front Panel Operation

Health and Status

Health and Status (H/S) displays the health and status of the DSU, and DBM, TDM or MCMP, if installed. DSU and line conditions are automatically scanned for normal limits. Refer to the User’s Guide for Health and Status messages.

Device Health and Status

Device Health and Status (Devic) reports health and status information for a selected DSU.

For a DSU with TDM or MCMP, the Device Health and Status report displays:

• The health and status of both the DSU and TDM or

MCMP circuit cards.

• Any test or alarm involving the TDM or MCMP

that also affects the DSU.

• Any test or alarm that appears on the DSU’s Device

Health and Status report.

DTE Status

DTE status is a snapshot display of the local or remote DSU/DBM’ s external DTE interface status. For TDM, MCMP, or Bridge mode, an additional port number screen appears.

Port Number: 1

Displ

The DTE interface leads appear in sets. Use the or

key to scroll and view the next set of DTE leads.

Table 3-2 translates the status codes.

Table 3-2

DTE Lead Status Codes

Code

–

↑↓

ON/SPACE (line above text line) Off/MARK (line below text line) In transition between Off and ON

Lead Status

Circuit Quality

Circuit Quality (CircQ) is a display of the DDS

Receive Signal Loss and analog DBM measurements. Circuit Quality does not display when MUX Function is set for EBrdg. Refer to Document No. 3610-A2-GB46 for more information.

Identity

Identity (ID) displays a report showing a DSU’s

model number, serial number, software/firmware version, network address, DDS rate, DBM rate, and the DBM type installed. For a DSU with TDM or MCMP, the TDM or MCMP circuit card’s model, application, and firmware version also appear. Refer to Table 3-3 in your User’s Guide for Identity Descriptions.

Use F1 and F2 to change the port number and F3 to display the status.

The following external DTE interface data appears for the selected DSU with TDM or MCMP. The display may differ from the DSU’s LED indicators which reflect the internal states of the interface circuits.

Prt01 DTE Stats: TXD RXD DSR

Terminal Power

Terminal Power (TPwr) is a display showing the status

of the connected DTE’s EIA-232 and V.35 interface. For a DSU with TDM or MCMP, Terminal Power displays the RTS lead status for the DTE connected to the DSU for Port 1. The front panel displays On when the voltage is less than –3V or greater than +3V.

3-53610-A2-GB48-50 September 1996

COMSPHERE 3600 Series Data Service Units

Backup Branch

The Backup (Bckup) branch controls operation of digital bridging when a DSU with TDM or MCMP has MUX Funct set to CBrdg or EBrdg.

TOP-LEVEL MENU

Local

Stat

Remot

Address

Test

Bckup

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

For additional use of the Backup branch, refer to Document No. 3610-A2-GB46 for network interface aggregate switching and Document No. 3610-A2-GB49 for DBM information.

Msgs

Confg

Ctrl

496-12971-0

• DrBU (drop backup) is used to:

— Deactivate the bridge — Connect the DDS line to bridge — Switch to the DDS line using timing specified

by the DSU TxClkSource configuration option

For a DSU configured as a central-site bridge with the

Bridge Rate configuration option set to =DSU, the following is an example of the display for partial backup of a CBrdg.

Brdg with DDS Bkup

For a DSU configured as a central-site bridge with the Bridge Rate configuration option set to a data rate, the following screen appears. The DDS and backup data rates can be different.

Digital Bridging

Use the Backup branch to configure a digital bridge.

Refer to Appendix C for configuration examples.

Central-Site Bridge

For a DSU configured as a central-site bridge (CBrdg),

the backup options available are Bkup and DrBU. Refer to T able 4-3 for Digital Bridge Setup Configuration

Options.

• Bkup (backup) is used to:

— Activate the bridge — Disconnect DDS line from bridge — Switch to the timing source specified by the

Bridge Timing configuration option

Do not initiate the Bkup option for a partial multipoint backup.

Inactiv Brdg Bkup

Extended Bridge

For a DSU configured as an extended bridge (EBrdg):

• DSU/DBM is always in Dial Backup mode and no

Backup menu options appear

• DBM circuit card should not be installed. If

installed, the DBM must be disabled

When in full backup, the following screen appears.

Brdg w/o DDS DrBU

3-6 September 1996 3610-A2-GB48-50

Front Panel Operation

Test Branch

The Test branch provides extensive testing capabilities

for the DSU, DDS circuit, DBM, and backup circuit.

TOP-LEVEL MENU

Remot

Address

Stat

Local

Bckup Ctrl

Test

DSU DBM

Abort Devic Lpbk Lamp

Subn Selective

Start Start Start Port

Select

Msgs

Confg

BERT

EE DT

Port

Select

DTon

On the aggregate data path, Local Loopback (LL) and End-to-End (EE) tests can be run.

Performing tests on the aggregate data stream tests the entire bandwidth, and in-band transport communication is lost. For tests such as aggregate Digital Loopback (DL), the control DSU reports a No Response or a TribTimOut alarm for downstream devices.

When the tributary DSU receives a test request from the control DSU, any locally initiated test in progress is aborted.

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, or time-out parameters. No data or acknowledgment messages will be transmitted while the test is in progress.

Address Address

Run

# Blocks

Tim

LL DTE DL RL

Port

Select

Port

Select

Address

Displ Clr

496-12972-03

Port

Select

While performing a multiplexing function for a DSU, tests can be requested on individual ports or on the aggregate data path. Multiplexing functions include:

• TDM or MCMP

• Nondisruptive diagnostics

• Rate adaption

Abort

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

Device Test

The Device (Devic) Test is an internal self-test. If TDM or MCMP is present, the Device T est will test the MUX circuit card also.

3-73610-A2-GB48-50 September 1996

COMSPHERE 3600 Series Data Service Units

Loopbacks

Loopback (Lpbk) provides four loopback tests.

Figure 3-3 shows the direction of each loopback on the

circuit. Refer to Document No. 3610-A2-GB46 for additional loopback information.

Local Loopback

Local Loopback (LL) is session-disruptive; performing

the test disrupts data. 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.

• Network connection to the DSU is not required.

• For TDM, MCMP, or Bridge mode, the entire data

stream is looped back and all six ports are in Local Loopback.

DTE Loopback

DTE Loopback (DTE) loops back the data path at the

DTE/DCE interface on a per-port basis without affecting the operation of the remaining ports. The DSU with TDM or MCMP permits one active test at a time.

Selecting one port or all active ports (Aggr) loops back the user-transmitted data and the in-band secondary channel transport data when nondisruptive diagnostics are in effect. This disrupts in-band data transport communications.

In Bridge mode, a Basic mode loopback occurs without port selection. For MCMP mode, using the NetIntf selection to perform a Digital Loopback is not a valid command.

Remote Digital Loopback

Remote Digital Loopback (RL) supports testing by an external device, such as a test pattern generator connected to the local DSU’s DTE interface. This tests the local DSU and the DDS circuit.

• In TDM or MCMP mode, asserting power to Pin 21

on Port 1 initiates a V.54 aggregate loopback. This loopback is performed on the DDS circuit unless a dial backup session is active.

• In MCMP mode, the port selected is not

automatically the port placed in loopback at the remote location. If a channel assigned to Port 2 locally is assigned to Port 3 remotely, Port 3 at the remote location is placed in loopback.

Digital Loopback

Digital Loopback (DL) allows manual testing with the

remote end of the circuit. DL can be initiated from a control or a point-to-point tributary.

DL on a

Port

DTE

COMSPHERE 3610

Control

DSU

DL on

Aggregate

Figure 3-3. Loopbacks Example

To abort a Remote Digital Loopback, issue an Abort command to the control DSU.

RL on

Aggregate

NETWORK

COMSPHERE 3610

Tributary

DSU

RL on a

Port

DTE

496-1504

3-8 September 1996 3610-A2-GB48-50

Front Panel Operation

Digital Test

The Digital T est (DT) verifies operation of a pair of

DSUs and the data circuit between them. When a Digital Test is performed on a specific port, data transmission is not affected on the other ports.

For a DSU operating in single-port mode and having either nondisruptive diagnostics or rate adaption in effect, an additional selection for Aggr or Prt1 appears.

Selecting Aggr tests the looped data path; in-band communication transport data is not allowed.

End-to-End Test

The End-to-End (EE) test analyzes a control and a tributary DSU or DBM and the network circuit between them in both directions independently. Refer to Document No. 3610-A2-GB46 for additional information.

Bit Error Rate Test

The Bit Error Rate T est (BERT) is session-disruptive

and transmits a test pattern to analyze the network circuit. Refer to Document No. 3610-A2-GB46 for additional information.

Dial Tone Test

The Dial T one test (DTone) allows a DBM to test for

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

3-93610-A2-GB48-50 September 1996

COMSPHERE 3600 Series Data Service Units

Configuration Branch

The Configuration (Confg) branch allows you to configure or customize the DSU and its options.

The Configuration branch menu varies with the options being configured. With TDM or MCMP installed, the MUX and PrtSp (Port Speed) option sets appear.

Refer to the configuration option tables in Chapter 4, the menu tree in Appendix A, and the configuration

worksheets in Appendix B for additional configuration

details. Additional Configuration branch menu details are in Document No.:

• 3610-A2-GB46 for DSU information

• 3610-A2-GB49 for DBM information

TOP-LEVEL MENU

Local

Stat

Opts PList Dir Phone

Displ Chang

Activ

Load

Bckup

Clr

Add

Acq

Skip

Delet

Chang Clr

Remot

Address

Test

Confg

ChgMd

Addr

Save

DPII

Enab Pswrd CIDDisab

Pswrd

ADp

Msgs

Term

SPID

Chang Clr

Save

Enab

Ctrl

Disab

Activ

SAVE DSU DBM Gen Bkup MUX

Activ

Activ Usr1 Usr2 Usr3

Prt1 Prt2 Prt3 Prt4 Prt5 Prt6

Remt

Address

Activ Usr1 Usr2 Usr3

Diag

DSU DBM Gen

Remt Usr1 Usr2 Usr3

Address

Copy From

Usr1

Usr3

Usr2

Copy

Setup Prt1 Prt2 Prt3 Prt4 Prt5 Prt6

TDM MCMP CBrdg EBrdg None

All Prt1 Prt2 Prt3 Prt4 Prt5 Prt

FacT

FacC

PrtSp

DSU DBM Chan

Copy

FacB

MPTC

MPTT

LPDA

FB1 FB2

496-12973-06

3-10 September 1996 3610-A2-GB48-50

+ 56 hidden pages

Paradyne 3611 User Manual

Table of Contents

Preface

Product Introduction

TDM/MCMP Installation and Setup

Front Panel Operation