Verilink PRISM 4051 User Manual

PRISM 4051

DDS

CSU/DSU

34-00253.2

Copyright Notice

Copyright © 1999 Verilink Corporation. All rights reserved.
This document does not create any express or implied warranty about Verilink or about its prod-

ucts or services. Verilink’s sole warranty is contained in its product warranty. The end-user docu­mentation is shipped with Verilink’s products and constitutes the sole specifications referred to in
the product warranty. Verilink has made reasonable efforts to verify that the information contained
herein is accurate, but Verilink assumes no responsibility for its use or for any infringement of pat­ents or other rights of third parties that may result. The customer is solely responsible for verifying
the suitability of Verilink’ s products for its use. Specifications are subject to change without notice.

Manual reorder # 34 -00253

nd

2

Edition, June 1999

Trademarks

Verilink is a registered trademark Verilink Corporation.
Any named products herei n are trademarks of their respective companies.

FCC Requirements

This equipment has been tested and found to comply with the limits for a Class A digital device,
pursuant to Part 15 of FCC Rules. These limits are designed to provide reasonable protection
against harmful interference when the equipment is operated in a commercial environment. This
equipment generates, uses, and can radiate radio frequency e nergy and if not installed and used in
accordance with the instruction manual, may cause harmful interference to radio communications.
Operation of this equipment in a residential area is likely to cause harmful interference in which
case the user is required to correct the interference at his own expense. This device must also
accept any interference received, including interference that may cause undesired operation.

Shielded cable s must be used to ensure compliance with the Class A FCC limits.

Changes or mo difications t o this unit not expressly approved by the party respons i­ble for compliance could void the user’s authority to operate the equipment.

This equipment c omplies with Part 68 of the FCC Rules.
1 All direct connections to DDS lines must be

made using standard plugs and jacks (compli­ant with Part 68). The table presents a list of

Port ID REN/SOC FIC USOC

56 kbps 6.0F 04DU5-56 RJ-48S

applicable registration jack USOCs, facility interface codes (FICs), and service order codes
(SOCs). These are required when ordering service from the telco.

2 If the CSU/DSU appears to be malfunctioning, it should be disconnected from the DDS lines

until the source of trouble is determined to be your equipment or the telephone line. If your
equipment needs repair, it should not be reconnected until it is repaired.

3 The CSU/DSU has been designed to prevent harm to the DDS network. If the telephone com-

pany finds that the equipment is exceeding tolerable parameters, it can temporarily disconnect
service. In this case, the telephone company will give you advance notice, if pos sible.

4 Under FCC rules , no customer is authorize d to repa ir this equipment, re gardless of warranty

status.

5 If the telephone company alters its equipment in a manner that will affect the use of this device,

it must give you advance warning so that you can have the opportunity for uninterrupted service.
You will be advised of your right to file a complaint wit h the FCC.

6 In the event of equipment malfunction, all repairs should be performed by our company or an

authorized agent. It is the responsibility of users requiring service to report the need for service
to our company or to one of our authorized agents.

7 On the side of the 1051 chassis is a label that contains, among other information, FCC registra-

tion number for this equipment. If requested, this information must be provided to the telephone
company.

Canadian Emissions Requirements

This digital apparatus does not exceed the Class A limits for radio noise emissions from digital
apparatus set out in the Radio Interference Regulations of the Canadian Department of Communi­cations.

On 48-VDC units only, end users should use existing 48-VDC battery sources or

✍

a CSA-certified power supply.

Le présent appareil numérique n’émet pas de bruits radioélectriques dépassant les limites applica­bles aux appareils numériques (de la class A) prescrites dans le Règlement sur le brouillage
radioélectrique édicté par le ministè r e des Communications du Canada.

Notice: The Industry Canada label identifies certified equipment. This certification means that the
equipment meets certain telecommunications network protective, operational, and safety require­ments. The Industry Ca nada does not guarantee the equipment will operate to the user’s
satisfaction.

Before installing this equipment, users should ensure that it is permissible to be connected to the
facilities of the local telecommunications company. The equipment must also be installed using an
acceptable method of connection. In some cases, the company’s inside wiring associated with a
single line individual service may be extended by means of a certified connector assembly (tele­phone extension cord). The customer should be aware that compliance with the above conditions
may not prev ent degradation of service in some situations.

Repairs to certified equipment should be made by an authorized Canadian maintenance facility
designated by the supplier. Any repairs or alterations made by the user to this equipment, or equip­ment malfunctions, may give the telecommunications company cause to request the user to discon­nect the eq uipment.

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

Caution: Users should not attempt to make such connections themselves, but should contact the
appropriate elec tric inspection authority, or electrician, as appropriate.

Warranty

Verilink's product wa rranty covers repair or replacement of all equipment under normal use for a
five-year period from date of shipment. Replacement products may be new or reconditioned. Any
replaced or repaired product or part has a ninety (90) day warranty or the remainder of the initial
warranty period, whichever is longer. Our in-house Repair Center services on a standard 10-work­day-turnaround basis.

Customer Service

Verilink offers the following services:

• System Engineers at regional sales offices for network design and planning assistance
[phone]

• Technical Assistance Center for free 24×7 te lephone support during installation, maintenance, and
troubleshooting at [phone] and [e-mail]

• Return Materials Authorization (RMA) [phone], ext. 2282

• Maintenance contracts and leasing plans [phone], ext. 206

• Technical Training on network concepts and Verilink products at [phone],
ext. 346 and [e-mail]

• Web site at www.verilink.com

• F AX-On-Demand at [phone]

Retur ning Products

A product must be assigned a Return Materials Authorization (RMA) number before it is sent to
Verilink for repair. An RMA number is issued by Verilink Customer Service at [phone].
ext. 2282.

Safety Precautions

When handling this equipment, follow these basic safety precautions to reduce the risk of electric
shock and injury:

• Follow all warnings and instructions marked on the product and in the manual.

• Unplug the hardware from the wall outlet before cleaning. Do not use liquid cleaners or aerosol
cleaners. Use a slight ly damp cloth for cleaning.

• Do not place this product on an unstable cart, stand, or table. It may fall, causing serious damage to
the product.

• This product should be operated only from the type of power source indicated on the marking label
and manual. If you are unsure of the type of power supply you are using, consult your dealer or local
powe r compan y.

• Do not allow anything to rest on the power cord. Do not locate this product where the cord interferes
with the free movement of people.

• Do not over load wall outlets and e xtension cords, as this can result in fire or electric shock.

• Never push objects of any kind into the unit. They may touch dangerous voltage points or short out
parts that could result in fire or electric shock. Never spill liquid of any kind on this equipment.

• Unplug the equipment from the wall outlet and refer servicing to qualified service personnel under
the follow ing conditions:

• When the power supply cord or plug is damaged or frayed.

• If liquid has been spi lled into the product.

• If the product has been exposed to rain or water.

• If the product has been dropped or if the housing has be en damaged.

Table of Contents

v

Copyright Notice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ii

Trademarks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ii

FCC Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ii

Canadian Emissions Requirements . . . . . . . . . . . . . . . . . .iii

Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .iii

Customer Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .iii

Returning Products . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iv

Safety Precautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iv

1 General

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Network Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Equipment

Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Diagnostics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Management

Interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

. . . . . . . . . . . . . . . . . Supervisory (SUPV) Port2

Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Mechanical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Environmental . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Industry Listings . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Ordering

Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

2 Installation

Safety Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Unpacking and Inspection. . . . . . . . . . . . . . . . . . . . . . . . . 5

Supplied

Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Unit Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Configuration

Switch S1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Boot Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

DDS Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Timing Source. . . . . . . . . . . . . . . . . . . . . . . . . . . 7

RTS-to-CTS Delay . . . . . . . . . . . . . . . . . . . . . . 7

RTS, CTS, and DCD Handshake . . . . . . . . . . . . 7

Local and Remote Loopback Enable . . . . . . . . . 7

DTE Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Configuration Switch S2 . . . . . . . . . . . . . . . . . . . . . . 8

Antistream Timer . . . . . . . . . . . . . . . . . . . . . . . . 8

V.54 Loop Detection. . . . . . . . . . . . . . . . . . . . . . 8

Circuit Assurance . . . . . . . . . . . . . . . . . . . . . . . . 8

Loop Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

SUPV Port Rate . . . . . . . . . . . . . . . . . . . . . . . . . 9

NMS Port Rate . . . . . . . . . . . . . . . . . . . . . . . . . . .9

Configuration Switch S3 . . . . . . . . . . . . . . . . . . . . . . .9

Force Download Mode. . . . . . . . . . . . . . . . . . . . .9

Address Switch S4. . . . . . . . . . . . . . . . . . . . . . . . . . . .9

Network

Management Connections. . . . . . . . . . . . . . . . . . . . . . . . .10

Supervisory (SUPV) Connections. . . . . . . . . . . . . . .10

NMS Port. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

NMS IN and NMS OUT . . . . . . . . . . . . . . . . . .11

NMS Split Cable . . . . . . . . . . . . . . . . . . . . . . . .11

NMS IN Only. . . . . . . . . . . . . . . . . . . . . . . . . . .11

Chassis Operation. . . . . . . . . . . . . . . . . . . . . . . .11

Data Port Connections . . . . . . . . . . . . . . . . . . . . . . . . . . .12

Port Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

DDS NET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

Power Connection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

Redundant

Power Source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

Single Power Source . . . . . . . . . . . . . . . . . . . . . . . . .14

3 Operation

Introductio n. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

Front P anel

Controls and Indicators . . . . . . . . . . . . . . . . . . . . . . . . . .17

General Status

Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

Test Controls

and Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

Alarm Controls

and Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

Front P anel

Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

Test Switch. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

Supervisory Port. . . . . . . . . . . . . . . . . . . . . . . . . . . .20

Upgrading Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

4 Terminal Operation

Terminal Interface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

Screen

Components. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

Device Type and Revision . . . . . . . . . . . . . . . . .21

Date/Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

Element ID . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

Menu Title . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

Near and Far Element. . . . . . . . . . . . . . . . . . . . .22

Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

Local/Remote Screen Indicator . . . . . . . . . . . . .22

Cursor Controls. . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

Field Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

Software Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . .23

vi

Interface Start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Menu Structure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Alarms Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

NETAlarms. . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

DTE Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

(alarm status). . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Reset Alarm Registers . . . . . . . . . . . . . . . . . . . 25

Maintenance Screen . . . . . . . . . . . . . . . . . . . . . . . . . 26

Clear Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Clear Alarms. . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Loop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Unloop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Loop Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Line Loop. . . . . . . . . . . . . . . . . . . . . . . . . . 27

Data Loop . . . . . . . . . . . . . . . . . . . . . . . . . 27

Latching Loop . . . . . . . . . . . . . . . . . . . . . . 27

V.54 Loop . . . . . . . . . . . . . . . . . . . . . . . . . 27

Local Loop. . . . . . . . . . . . . . . . . . . . . . . . . 28

Activate Remote Access . . . . . . . . . . . . . . . . . . 28

BERT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Test Length . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Pattern Sync . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Elapsed Time . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Bit Errors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Errored Seconds . . . . . . . . . . . . . . . . . . . . . . . . 29

% EFS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Start Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Reset Errors. . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

NET and DTE Status . . . . . . . . . . . . . . . . . . . . 29

Near Loops . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Far Loops . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Configuration Screen . . . . . . . . . . . . . . . . . . . . . . . . 30

DDS Network Parameters. . . . . . . . . . . . . . . . . 31

Data Mode . . . . . . . . . . . . . . . . . . . . . . . . . 31

Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Circuit Assurance. . . . . . . . . . . . . . . . . . . . 31

Antistreaming Timer . . . . . . . . . . . . . . . . . 32

DTE Port Parameters . . . . . . . . . . . . . . . . . . . . 32

Port Type . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Port Rate . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Port Format . . . . . . . . . . . . . . . . . . . . . . . . 32

DSR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

DCD. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

RTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

RTS/CTS Delay. . . . . . . . . . . . . . . . . . . . . 33

DTR Alarm . . . . . . . . . . . . . . . . . . . . . . . . 33

V54 Loop. . . . . . . . . . . . . . . . . . . . . . . . . . 33

LL Detect. . . . . . . . . . . . . . . . . . . . . . . . . . 33

RL Detect. . . . . . . . . . . . . . . . . . . . . . . . . . 33

Alarm Parameters . . . . . . . . . . . . . . . . . . . . . . . 33

Loss of Signal Seconds . . . . . . . . . . . . . . . 34

Out of Service Seconds . . . . . . . . . . . . . . . 34

Out of Frame Seconds . . . . . . . . . . . . . . . . 34

Alarm Reset Timer . . . . . . . . . . . . . . . . . . 34

Management Parameters . . . . . . . . . . . . . . . . . .34

COA Connection (SUPV). . . . . . . . . . . . . .34

Primary Dial String, Secondary Dial String 35

Initialization String . . . . . . . . . . . . . . . . . . .35

Disconnection String. . . . . . . . . . . . . . . . . .35

Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36

Utilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37

Element ID. . . . . . . . . . . . . . . . . . . . . . . . .37

Set Time . . . . . . . . . . . . . . . . . . . . . . . . . . .37

Set Date . . . . . . . . . . . . . . . . . . . . . . . . . . . .37

New Password. . . . . . . . . . . . . . . . . . . . . . .37

Maintenance Reset . . . . . . . . . . . . . . . . . . .38

A Flash PROM Download
Procedure

Required

Equipment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39

PC Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39

1

ENERAL

G

Introduction

The Verilink PRISM 4051 DDS CSU/DSU provides
the ideal solution for remote DDS I and DDS II
branch access synchronous 56 and 64 kbps data
applications. It is a modular, nest mounted DDS
CSU/DSU and can be managed from a menu-driven
VT100 or by SNMP/Telnet commands from a
Verilink 8100A Site Controller.

The P

4051 is simple to install and operate. Full

RISM

access to configuration, status, and diagnostic
features is ava ilable through the software-driven
terminal interface connection.

The 4051 unit offers a managed interface into
standard DDS service. It supports synchronous data
rates at 56 kbps for DDS I and 64 kbps in DDS II.
The DTE supports V.35 or RS-232 interfaces.
External clocking is supported for use in tail circuit
applications.

The 4051 has diagnostic features which allow quick
and easy trouble isolation. The CSU/DSU responds
to all standard loop codes from the telco and can
initiate remote V.54 loopbacks. An internal BERT
may be used for testing. Line conditions are
monitored and reported through front panel LEDs, a
user connection to the terminal interface (or a Telnet
connection through the 8100A Site Controller).

RTS
DTR

TD
RD

4051

CSU/DSU

STATUS

LOS

N
E

OOF

D
T
E

LOOP
BERT

S
U
P
V

ERR

T

T
S
T

LOCFAR

The chapters in this manual are arrange d as follows.

General - describes product features, specifica tions, and ordering information.

Installation - describes unit mounting, configuration,

Figure 1-1 PRISM 4051 Unit

port and interface connections, and unit powering.

Operation - describes the front panel controls and indicators, unit testing, and
control port features.

Terminal Operation - describes the terminal interface setup and menu-based
screens which appear during a local or remote session.

2 C

HAPTER

1: G

Features

Specifications

ENERAL

• Mounts in a Verilink 1051 chassis

• Offers a mid-range solution for remote-site installations

• Provides DDS-I and DDS -II servi ce

• AT&T TR62310 compatible

• 56 kbps (DDS I) and 64 kbps Clear Channel (DDS II)

• Simple setup and software management through a menu-driven interface on
terminal connection to supervisory port.

• Complete diagnostics including multiple loops and built-in BERT

• Programmable alarm thresholds

• Flash memory allows software upgrades in the field

• Five-year product warranty

Network Interface

Equipment

Interface

Diagnostics

Management

Interfaces

Service Types: DDS I or DDS II clear channel conforming to TR62310
Operating Modes: Full duplex, point-to-point, multi-point
Line Rates: 56 (DDS I) and 72 kbps (DDS II)
Loo p Ra nge : Up t o a 45 -d B lo ss
Line Connection: RJ-48S jack, 8-pin modular
Timing Sources: Network, DTE, and Internal

Sync Data Rates: 56 (DDS I) and 64 kbps (DDS II)
Anti-stream Timer: Off, 10, 30, or 60 seconds
DTE Clocking: Internal or External
DTE Connection: 34-pin V.35 (CCITT) or 25-pin RS-232D (EIA)

Loopbacks: CSU, V.54 (receive and send)
BERT: 511 pattern

Supervisory (SUPV) Port

Connection: 8-pin modular (RS-232)

Power

Data Rates: 1.2, 2.4, 9.6, and 19.2 kbps

24 VDC: 160 mA, 4 W, 14 BTU maximum
48 VDC: 73 mA, 4 W, 14 BTU maximum
Input Voltage Range: 17 VDC to 60 V DC

Specifications 3

Mechanical

Environmental

Compatibility

Housing: Verilink 1051 chassis
Mounting: Rack mount
Dimensions: 1.72 inches (4.37 cm) wide

6.8 inches (17.27 cm) high

10.5 inches (26.67 cm) deep

Operating Temp: 32° to 1 22°F (0° to 50°C)
Storage Temp: −4° to 185 °F (−20° to 85°C)
Humidity: 95% maximum (non-condensing)

TR62310: November 1987
TR62310A: December 1989 (addendum 3)
TR41450: November 1981
Internet Standards: RFC 1157 (SNMP)

RFC1155 (SMI)
RFC1213 (MIB-II)
RFC 1055 (SLIP)
Enterprise TXPORT MIB
Enterprise DDS MIB

Industry Listings

MIB - II: Device identification and interface performance data. All

applicable objects and reporting maintained by the 8100A Site
Controller.

FCC Compliance: Part 15 Class A, Subpart B, and Part 68
U.S. Safety: UL 1950, 3rd edition

Canadian Safety: C SA C22.2 No. 950-95
Industry Canada: CS-03, Issue 8

4 C

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1: G

ENERAL

Ordering Numbers

Each 4051 unit (Table 1-1) is supplied with the PRISM 4051 reference manual and
is equipped with V.35 data port (F-4051-01-111 is the default part number). Also
provided is an 8-pin modular-to-receptacle 1051 shelf to DDS adapter (part
number 9-1001-075-1).

Ta b l e 1 - 1 Equipment Part Numbers

F-4051-101- -

A Company 1 - TxPORT

B Special Option 1 - Standard Unit

C DTE Interface 1 - V.35 Unit

D O ption 1 - Not in stalled

* Not released at time of printing.

ABCD

PRISM 4051 Module

3 - Timeplex

2 - Hardened Protection*

2 - RS-232 Unit

The optional equipment shown in Table 1-2 may also be needed for the operation
of the unit.

Ta b l e 1 - 2 Optional Equipment Part Numbers

Part Number Optional Equipment

Network Cables
9-1001-070-010 DDS cross-over kit
9-1001-004-010 8-pin RJ-48 to 8-pin RJ-48 Network Cable
Supervisory Adapters
9 -1001-015-1

9 -1001-015-2
9-1001-016-1

9-1001-016-2
Supervisory Cable and Cable/Adapter Kit
9-1001-073-2 DB - 9 female to 8 -pin RJ - 48 (terminal to SUPV) kit
9-1544-619- xxx 8 - pin RJ-48 to 8- pin RJ- 48 cable
NMS Split Cable (Y-Cable)
9-1001-030 -xxx 8 - pin to dual 6- pin modular
V.35 Cables
9-1001-001-xxx V. 35 male to male null cable
9-1001-311-xxx V. 35 male to male, straight through
9-1001-312-xxx V. 35 male to female, straight through
RS- 232 Cables
9-1001-044 - xxx RS-232 male to male null cable
9-1001-211-xxx R S-232 male to male, straight through
9-1001-212-xxx R S-232 male to female, straight through
9-1001-222-xxx R S-232 female to female, straight through

xxx = length
005 = 5 fe et
010 = 10 feet
020 = 20 feet

DB -25 mal e to 8 -pin RJ - 48 (terminal to SUPV)
DB-25 female to 8- pin RJ-48 (terminal to SUPV)

DB -25 mal e to 8 -pin RJ - 48 (modem to SUPV)
DB-25 female to 8- pin RJ-48 (modem to SUPV)

2

NSTALLATION

I

This chapter contains information and instructions required to prepare the Verilink
PRISM 4051 for use. This chapter includes initial inspection procedures, mounting
instructions, configuration guidelines, connection instructions, and powering
information.

Safety Summary

Unpacking and Inspection

Supplied Materials

This manual contains information and warnings which must be followed by the
user to ensure safe operation and to retain the equipment in a safe condition.

This WARNING sign denotes a potential hazard to the operator. It calls attention to a

procedure or practice which, if not correctly performed or adhered to, could result in
injury or loss of life. Do not proceed beyond a WARNING sign until the indicated conditions
are fully understood and met.

Follow proper ESD (electrostatic discharge) procedures while handling the circuit

boards.

Upon receipt of shipment, inspect the shipping container and contents. If the
contents of the s hipment ar e incom plete or, if th ere is me chanical damage o r
defect, notify Verilink Customer Service. If the shipping container or cushioning
material is damaged, notify the carrier and Verilink immediately and make a
notation on the delivery receipt that the container was damaged (if possible, obtain
the signature and name of the person making delivery). Retain the packaging
material until the contents of the shipment have been checked for completeness
and the instrument has been checked both mechanically and electrically.

The PRISM 4051 shipment contains four items.

• PRISM 4051 unit

Mounting

• T1 to DDS adapter (part number 9-1001-075-1)

• Network Interface Cable (part number 9-1544-619)

• Reference manual with configuration guide

The Verilink 4051 DDS CSU/DSU is a modular unit that plugs into a Verilink
1051 chassis which holds up to 12 units.

The chassi s can be installed in either a 19- or 23-inch rack using four screws.
Connections are made from the rear panel of the chassis.

6 C

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2: I

NSTALLATION

Unit Configuration

The PRISM 4051 can be hardware configured by switches or software configured
by using a terminal connection to the front panel supervisory access (SUPV) port.
The terminal interface provides more capabilities than the configuration switches.

If there is a power failure, the 4051 retains its configuration in non - volatile
memory. This feature allows the unit to automatically restore normal service
following a power loss. See section Utilities on page 37 for more information.

The 4051 stores its operating firmware in Flash memory. If a software upgrade is
ever needed, Verilink will provide the hex files, the download program, and the
downloading instructions.

Hardware switches on the circuit boards allow configuring most simple
applications. These switches are described in the following paragraphs. If an
ambiguous configuration is programmed, the unit overrides invalid configuration
items.

The unit is hardware configured using four DIP switches located on the upper side
between the circuit boards (see Figure 2-1). Switch positions are numbered as
follows: position 2 of Switch S3 is referred to as Switch S3 - 2, and so on.

Before installation, verify each configuration switch setting.

Configuration

Switch S1

Switch 1 Switch 2 Switch 3 Switch 4

1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8

Figure 2-1 Top View of the PRISM 4051

Factory default settings are shown underlined throughout this manual.

Switch S 1 (Figure 2-2) is
used to set the configuration
for boot mode; DDS mode;
timing source; RTS - to- C TS
delay; RTS, CTS, and DCD

Boot

Mode

DDS I/

DDSII

handshake; local and remote
loopback enable; and DTE
alarm.

Down Up

Figure 2-2 Switch S 1

Timing

Source

Timing

Source

RTS-to-CTS

Delay

RTS, CTS, and

LL and RL

DTE

Alarm

Enable

DCD Handshake

Switch

S1

7654321

8

Boot Mode

Unit Configuration 7

Swi tch S1 -1 is use d to de termin e
whether the unit configures itself from
the DIP switches or from the saved
configuration as shown in Table 2-1. If
set to boot from the saved configuration,

Ta b l e 2 - 1 Boot Mode

Mode S1-1

Boot from the DIP switches
Boot from the saved configuration Up

Down

the switch settings are ignored. If set to boot from switches, the unit reads the DIP
switches on power up and configures the unit accordingly. Once running,
configuration changes can be made through the terminal interface, overriding the
switch settings.

DDS Mode

Swi tch S1 -2 is use d to

Ta b l e 2 - 2 DDS Mode

establish the DDS mode as
either DDS II/64 kbps or
DDS I/56 kbps as shown in
Table 2-2.

Mode S1-2

DDS II/64 kbps
DDS I/56 kbps U p

Down

Timing Source

Positions S1-3 through S1-4 select the source of unit
clocking. Deriving timing from the network
is the most common timing source for most DDS
applications. The unit may also be clocked from an
internal standard or from the DTE as shown in
Table 2-3.

Ta b l e 2 - 3 Timing Source

Source S1-3 S1-4

Network
Internal Down Up
DTE Up Down

Down Down

RTS- to- C TS De lay

Swi tch S1 -5 is use d to se lect th e

Ta b l e 2 -4 RTS- t o -CT S D el ay

delay on an RTS-to-CTS transition as
shown in Table 2-4. When the
RTS-to-CTS control option is set to

Delay

Normal

Normal, CT S fo llows the stat e o f RTS
after some delay, depending on the

Long 56 kbps 0.8 ± 0.04 ms Up

data rate. The delay can be selected
for a Normal or Long delay.

RTS, CTS, and DCD Handshake

Swi tch S1 -6 is use d to
determine the handshake
process as either Force On or
Normal a s shown in Table 2-5.

Ta bl e 2 - 5 RTS, CTS, and DCD Handshake

Handshake S1-6

Force On
Normal Up

Local and Remote Loopback Enable

Switch S1-7 is used to enabl e or
disable local and remote
loopbacks on the DTE interface
as shown in Table 2-6.

Ta b l e 2 - 6 Local and Remote Looback Enable

Local and Remote Loopbacks S1-7

Disable
Enable Up

DTE
Rate Delay S1-5

56 kbps 0.4 ± 0.02 ms Down
64 kbps 0.3 ± 0.015 ms

64 kbps 0.6 ± 0.03 ms

Down

Down

8 C

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2: I

NSTALLATION

DTE Alarm

Configuration

Switch S2

Switch S1-8 is used to enable or disable
the DTE alarm as shown in Table2-7.
The DTE alarm is generat ed when DTR
from the D TE is fa lse.

Ta bl e 2 - 7 DTE Alar m

DTE Alarm S1-8

Disable
Enable Up

Down

Switch S2 (Figure 2-3) configures the antistream timer, V.54 loop, circuit
assurance, loop mode, supervisory port rate, and NMS port rate.

Antistream

V.54 Loop

Timer

Down Up

Figure 2-3 Switch S 2

Circuit

Enable

Assurance

Loop

Mode

Supervisory

Port Rate

NMS

NMS

Port Rate

Supervisory

Port Rate

Port Rate

Switch

S2

7654321

8

Antistre am Timer

Switch S2-1 is
used to set the
Antistream Timer
as sh own in
Table 2-8.

Ta bl e 2 - 8 Antistream Timer

Antistream Timer S2-1

Off
30 Seconds Up

Down

V.54 Loop Detection

Switch S2-2 is
used to en able
V.54 loop
detection as sho wn
in Table 2-9.

Ta bl e 2 - 9 V.54 Loop Detection

V.54 Loop S2-2

Enable
Disable Up

Down

Circuit Assurance

Switch S2-3 selects whether the CTS control lead
responds to the data signal from the network as
shown in Table 2-10. When Circuit Assurance is On
and the unit is receiving idle code (i.e., DCD is Off),
the 4051 turns the CTS lead off. When Circuit

Table 2-10 Circuit Assurance

Circuit Assurance S2-3

Enable Up
Disable

Down

Assurance is turned off, the state of the CTS control lead is not affected by the
data signal from the network.

Loop Mode

Switch S2-4 is
used to select the
loopback method
as sh own in
Table 2-11.

Table 2-11 Loop Mode

Loop Mode S2-4

Bidirectional
Unidirectional Up

Down

SUPV Port Rate

Positions S2-5
and 2-6 set the
bit rate for the
network
management
system as shown
in Table 2-12.

NMS Port Rate

Table 2-12 SUPV Port Rate

NMS Port Rate S2-5 S2-6

19.2 kbps

1.2 kbps D own Up

2.4 kbps U p Down

9.6 kbps U p Up

Down Down

Unit Configuration 9

Configuration

Switch S3

Positions S2-7
and 2-8 set the
bit rate for the
network
management
system as shown
in Table 2-13.

Table 2-13 NMS Port Ra te

NMS Port Rate S2-7 S2-8

19.2 kbps

1.2 kbps Down Up

2.4 kbps Up Dow n

9.6 kbps Up Up

Switch S3
(Figure 2-4) is
reserved fo r
future expansion,
with the

Unused

Unused

exception of
S3-8, which is
used to f orce
download mode.

Down Up

Figure 2-4 Swi tch S3

Force Download Mode

Swi tch S3 -8 is use d to Forc e
Download Mode as shown in
Ta ble 2-14. For download bit-rate
informat ion refer t o step 7 of
PC Setup on page 39.

Down Down

Unused

Unused

Unused

Table 2-14 Force Download Mode

Mode S3-8

Norm al Operat ion
Begin Flash Dow nloa d Up

Unused

Force Download

Unused

7654321

Mode

8

Switch

S3

Down

Address Switch S4

Switch S4 sets the unit
address. When using the

4051 with an 8100A Site
Controll er, each element in a
group must have a unique
unit address. As many as 50
units (with addresses from 1

LSB MSBBinary values

1 2 4 8 16 32 64 128

Down Up

00000000

Figure 2-5 Swi tch S4

Switch

S4

7654321

8

to 50) can exist in a group.
If the unit is not connected to a site controller, the NMS unit address should be left
at the factory default setting of 1

where Position 1 is Up and all other positions are

Down (see F igure 2-5 ).

10 C

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2: I

NSTALLATION

Switch S4 has eight positions that are used to create an 8-bit binary code for an
address in the range of 1 to 50. Switch position S4 - 1 is the least significant bit
(LSB) and S4 - 8 is the most significant bit (MSB). If a switch is down, its value is

0. If up, its value is that of the upper location. The values are additive. For
example, to set a unit address to 5, position S4- 3 ( binary value is 4) and position
S4 - 1 (binary value is 1) would be set Up for a unit address of 5 (4 + 1). All other
positions would be set Down.

Network Management Connections

Supervisory (SUPV)

Connections

Network management is accomplished via the NMS or S

port as described

UPV

earlier in this chapter. Each port provides a ComView NMS interface and can be
managed under SNMP/T

when connected to an 8100A Site Controller.

ELNET

The front panel supervisory port, labeled SUPV, serves two functions. A modem
may be connected to the SUPV port for remote access or use of the COA (call on
alarm) feature . The terminal interface ma y be accessed thro ugh this port.

The SUPV port bit rate can be configured for 1200, 2400, 9600, and 19200 bps as
shown in SUPV Port Rate on page 2 - 9. The default is 19200 bps. Refer to section
Ordering Numbers on page 4 for cable information.

The port is a serial RS-232 DCE port
configured for 8 bits, no parity, and 1 stop
bit. The physical connection is an 8-pin
modular jack with the following pinout
(see Table 2-15).

The unit firmware may be access ed
through this port (see Software
Configuration on page 23) as well as the
Call On Alarm feature (see Management
Parameters on page 34). This port is

Table 2-15 S UPV Port Connections

Pin SUPV Port Terminal Connection

1DCD Out
2CTS Out
3 Frame Ground
4 Data Out
5 Date In
6 Signal Ground
7RTS In
8DTR In

accessed through either a direct connection or a dial-up connection via an
AT-command-set-compatible modem. The modem should be optioned to ignore
DTR, enable auto answer, inhibit command echo, and return verbose result codes.

NMS Port

If the unit is called and sent a break command before receiving the connect message,
the modem hangs up.

The COA feature works through the supervisory mode only.

The PRISM 4051 is fully compatible with the Verilink 8100A Site Manager. The
8100A software system is used to manage small to large networks of Verilink
network access products.

NMS ports located on the rear panel of the 1051 chassis provide access to the
8100A Site Controller. The unit accesses the built-in 1051 chassis bus.

An element may be accessed by using an RS-232 connection from the serial port
of the computer running the 8100A program to the element’s SUPV port or the

Network Management Connections 11

NMS IN and NMS OUT ports. The different connection methods are described in
the following paragraphs.

NMS IN and NMS OUT

The two 6-pin modular
connectors labeled NMS
IN and NMS OUT on

8100A

NMS OUT

the 1051 rear panel may
be used for connection
to the 8100A Site
Controller. These ports

Element

NMS IN
allow the connection of
multiple collocated units
in a daisychained
IN/OUT bus

NMS IN Element
arrangement as shown in

Figure 2-6. The OUT
port of one element is
connect ed to the IN port
of the next element, and
so on, t o form a
complete chain among

Last
Element

Figure 2-6 NMS Daisychain Arrangement

NMS IN

the group of elem ents.

All units on the same NMS chain must use the same NMS bit rate.

NMS Split Cable

The 8100A Site Controller may be connected directly into the NMS chain between
two elements if connection to the supervisory port is not desired. A Y-cable is used
from the 8100A serial port which splits the transmit and receive signals into two
6-pin modular connectors for the NMS IN and NMS OUT ports. Ordering
information for this cable is found in Ordering Numbers on page 4.

NMS IN Only

The NMS IN connector provides both the transmit and receive signal pair. This
port may be used for a modem connection or as a VT100 terminal interface (refer
to Terminal Interface on page 21).

Chassis Operation

8100A Site Controller operation in the 1051 chassis has the units chained together.
The front panel supervisory port and the rear panel NMS ports operate in the same
fashion.

12 C

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2: I

NSTALLATION

Data Port Connections

The NMS address, port rate, and power
up configuration mode may be set by
either configuration switches or
through software control. The physical
connection is 6-pin modular connector
with the pinouts for these connectors
shown in Table 2-16. This port is a
serial RS-232 DCE port configured for
eight bits, no parity, and one stop bit.

Both models of the
Verilink 1051 chassis
provide connection to the
customer equipme nt. Each
slot of the 1051-2 has a
corresponding DTE 8-pin
RJ-48 connector and a
high-speed DTE female
25-pin connector located
on the chassis rear panel.

Table 2-17 DTE RJ-48 Pinout

Pin Signal

1Data Out
2Data Out
3Not Used
4Data In
5Data In
6Not Used
7, 8 Chassis Ground

The 1051-3 chassis is
similar excep t that it has a

Table 2-18 High-Speed DTE Connector Pinout

high-speed DTE 34-pin
connector ins tead of the
25-pin connector. The
pinout for the DTE RJ-48
connector is given in
Table 2-17 and the pinout
for the high-speed DTE
connectors is given in
Table 2-18.

ITU/EIA
Circuit Common Name

101/AA Frame Ground 1 A Gnd
102/AB Signal Ground 7 B Gnd
103/BA (A) Transmit Data A 2 P In
103/BA (B) Transmit Data B 14 S In
104/BB (A) Receive Data A 3 R Out
104/BB (B) Receive Data B 16 T Out
105/CA Request to Send 4 C In
106/CB Clear to Send 5 D Out
107/CC Data Set Ready 6 E O ut
108/CD Data Term Ready 20 H In
109/CF Data Carrier

114/DB (A) Transmit Clock A 15 Y Out
114/DB (B) Transmit Clock B 12 AA Out
115/DD (A) Receive Clock A 17 V Out
115/DD (B) Receive Clock B 9 X Out
113/DA (A) External Clock A 24 U In
113/DA (B) External Clock B 11 W In
141/LLB Local Loopback 18 J In
140/RLB Remote Loopback 21 BB In
142/TM Test Mode 25 K Out

Table 2-16 NMS Port Connector Pinouts

Pin NMS Bus IN NMS Bus OUT

1 Not Used Not Used
2 Signal Ground Signal Ground
3 Dat a O u t D a ta Out
4 Dat a In Not Used
5 Signal Ground Signal Ground
6 Not Used Not Used

DB-25
25-pin

8FOut

Detect

V.35
34-pin DCE

FCC rules require that interconnecting cables carrying high-speed data be shielded
appropriately to minimize radio frequency interference.

Data Port Connections 13

Port Connections

The PRISM 4051 is a nest-mount module that fits into the Verilink 1051 chassis,
which provides the DDS Network and Data Port connections as shown in
Figure 2-9 on page 15 and Figure 2-10 on page 15.

DDS NET

The DDS network is connected to the NET connector (8-pin modular) following
the RJ-48S sta ndar d t hro ugh the supp lie d a dapte r ( par t nu mbe r 9-1001- 070 - 010).
Transmit data (from th e CSU/DS U to th e network ) is on pi ns 1 and 2 and re ceive
data (from the network to the CSU/DSU) is on pins 7 and 8.

The network side of the CSU/DSU is referred to as the network interface. This
interface contains an ALBO (automatic line build out) which allows the CSU/DSU
to be located a substantial distance away from the telco network interface with a
receive signal level to −45 dB.

The network physical interface is a standard
RJ-48S 8 - pin modular jack with the pinout
shown in Table 2-19.

Table 2-19 RJ-48S Adapter Pinout

Pin NET Interface

1Data Out (R1)
2Data Out (T1)
3, 4, 5, 6 Not Used
7 Data In (T)
8 Data In (R)

In accordance with FCC Rules, Part 68.218(b), notify the telephone company before
disconnecting this product.

14 C

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2: I

NSTALLATION

Power Connection

Redundant

Power Source

The 4051 requires a −48 VDC power source capable of supplying a 150 - mA
current. All units in the chassis are powered by −48 VDC sources which are
connected to the 6-position terminal strip, TB2, on the rear of the 1051 chassis.
The power supply should be sized for maximum current draw for the chassis.

The 1051 chassis is designed with two power buses. The A bus feeds the odd slots
and the B bus feeds the even slots. A power board is installed on TB2 which
allows the connection of two independent −48 VDC supplies operated in
redundant mode. This is the default configuration described in Redundant Power
Source below. The other powering method is described in Single Power Source.

The power board allows the
connection of two independent

−48 VDC supplies operated in
a redundant mode. All slots
are powered from the
combined input from the A
and B power supplies (the A
and B buses are in a logical
OR arrangement). If one
supply fails, the other powers
the entire ch assis. An exa mple

Ver ilink
1041
Power
Supply

PS A

PS B

1
2
3

TB2

4
5

–
+

6

Verilink
1051
Chassis

using a Verilink 1041 power
supply is shown in Figure 2-7.

Figure 2-7 Wiring for Redundant Power Sources

Single Power

Source

Using a single power source is
essentially the same as the
redundant configuration with
power supply B not
operational. If the redundant
power board is not used, the A
and B buses must be connected
together as shown in
Figure 2-8.

Ver ilink
1040
Power
Supply

–
+

1
2
3

PS A

4

TB2

5

PS B

–
+

Figure 2-8 Wiring for a Single Power Source

6

Verilink
1051
Chassis

Power Connection 15

4051

CSU/DSU

TD
RD

D

T

RTS

E

DTR

4051

CSU/DSU

STATUS

TD

LOS

N
E

RD

OOF

D

T

T

RTS

E

DTR

LOOP

T

BERT

S
T

ERR

LOCFAR

S
U
P
V

4051

CSU/DSU

STATUS

TD

LOS

N
E

RD

OOF

D

T

T

RTS

E

DTR

LOOP

T

BERT

S
T

ERR

LOCFAR

S
U
P
V

4051

CSU/DSU

STATUS

TD

LOS

N
E

RD

OOF

D

T

T

RTS

E

DTR

LOOP

T

BERT

S

T

ERR

LOCFAR

S
U
P
V

4051

CSU/DSU

STATUS

TD

LOS

N
E

RD

OOF

D

T

T

RTS

E

DTR

LOOP

T

BERT

S
T

ERR

LOCFAR

S
U
P
V

4051

CSU/DSU

STATUS

TD

LOS

N
E

RD

OOF

D

T

T

RTS

E

DTR

LOOP

T

BERT

S
T

ERR

LOCFAR

S
U
P
V

4051

CSU/DSU

STATUS

TD

LOS

N
E

RD

OOF

D

T

T

RTS

E

DTR

LOOP

T

BERT

S

T

ERR

LOCFAR

S
U
P
V

4051

CSU/DSU

STATUS

TD

LOS

N
E

RD

OOF

D

T

T

RTS

E

DTR

LOOP

T

BERT

S
T

ERR

LOCFAR

S

U

P
V

4051

CSU/DSU

STATUS

TD

LOS

N
E

RD

OOF

D

T

T

RTS

E

DTR

LOOP

T

BERT

S
T

ERR

LOCFAR

S
U
P
V

4051

CSU/DSU

STATUS

TD

LOS

N
E

RD

OOF

D

T

T

RTS

E

DTR

LOOP

T

BERT

S
T

ERR

LOCFAR

S
U
P
V

4051

CSU/DSU

STATUS

TD

LOS

N
E

RD

OOF

D

T

T

RTS

E

DTR

LOOP

T

BERT

S
T

ERR

LOCFAR

S
U
P
V

4051

CSU/DSU

STATUS

LOS
OOF

LOOP
BERT

ERR

S
U
P
V

STATUS

TD

LOS

N
E
T

T
S
T

LOCFAR

N

E

RD

OOF

D

T

T

RTS

E

DTR

LOOP

T

BERT

S
T

ERR

LOCFAR

S
U
P
V

Figure 2-9 Model 1051-3 Chassis, Front View

NOTE: The DB-25 version ( 1051-2) is also avail able (the V.35 is sho w n).

HIGH

SPEED

DTE

12

( B )
NMS

IN

T1

NET

12

HIGH

SPEED

DTE

T1

NET

12

1 2 3 4 5

TB1 -

( B )
NMS

OUT

T1

NET

11

11

T1

NET

11

NET

HIGH

SPEED

DTE

10

NET

T1
10

T1
10

TB2

NMS A & NMS B, IN AND OUT, ARE NON-TELECOM (T1) CONNECTORS

Les portes d'entree/sortie NMS A & NMS B sont des connecteurs non-telecommunication (T1)

NET

HIGH

SPEED

DTE

NET

T1

9

9

T1

9

TB2 -

HIGH

SPEED

DTE

8

1 2 3 4 5 6

2.4 AMPS

T1

NET

8

T1

NET

8

T1

NET

7

HIGH

SPEED

DTE

7

T1

NET

7

1 - EXT CLK

TB1

2 - EXT CLK
3 - ALARM RING

HIGH

SPEED

DTE

T1

NET

6

6

T1

NET

6

4 - ALARM TIP
5 - SIG GND

HIGH

SPEED

DTE

5

T1

NET

5

T1

NET

5

HIGH

SPEED

DTE

1 - +48V RTN ( B )

TB2

2 - FRAME GND
3 - -48V IN ( B )

T1

NET

4

T1

NET

4

4

T1

NET

3

HIGH

SPEED

DTE

3

T1

NET

3

4 - -48V IN ( A )
5 - SIG GND
6 - +48V RTN ( A )

( A )
NMS

IN

NET

HIGH

SPEED

DTE

2

NET

T1

2

T1

2

( A )

NMS
OUT

HIGH

SPEED

DTE

ENET

T1

NET

1

1

T1

NET

1

Figure 2-10 Model 1051-3 Chassis, Rear

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NSTALLATION

3

PERATION

O

Introduction

Front Panel
Controls and
Indicators

General Status

Indicators

This chapter describes general operation of the Verilink
PRISM 4051 front panel. The 4051 may be controlled
manually using the front panel and the circuit board
configuration switches (configuration switches are
discussed in section Unit Configuration on page 6).

Chapter Terminal O peration covers the
firmware-contro lled Terminal Interfac e progra m, which
gives the user maximum control. The 4051 may also be
controlled using the 8100A Site Controller.

Factory default settings are underlined throughout this
manual.

The front panel contains 12 LED indicators which convey
status, alarm, and test information. The front panel also
contains a test switch and a supervisory port connector.
The following descriptions refer to Figure 3-1.

STATUS: The 4051 has two general status indicators on

1

the front panel that provide a quick check of the 4051
operating condition (Alarmed or Not Alarmed).

If neither indicator is On, the 4051 is not powered. If the
green indicator is On, the 4051 is powered and may be
functioning normally. If the red indicator is On, there is a
fault which exceeds alarm thresholds or another type of
4051 failure. The problem can usually be isolated by
further examination of the other front panel indicators as
described below. Some errors can only be determined
through the term inal interface (for examp le, OOS).

TD: This green indicator lights during a mark condition

2

on the high-speed transmit data line.

4051

CSU/DSU

STATUS

2
3
4

5

TD

RD
RTS
DTR

6

LOS

N
E

OOF

D
T
E

LOOP

BERT

ERR

T

T
S
T

LOCFAR

7

S

8

Figure 3-1 4051 Front Panel

U
P
V

1

9

10

11
12
13

RD: This green indicator lights during a mark condition

3

on the high-speed receive data line.

18 C

Test Controls

and Indicators

Alarm Controls

and Indicators

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3: O

PERATION

RTS: This green indicator lights when the request to send signal is active.

4

DTR: This green indicator lights when the data terminal ready signal is active.

5

Tes t Switc h: Th is switch (FAR/ LOC) i s used for local te sting. R efer to sec tion

6

Front Panel Testing in this chapter for more information.
Activity Indicators: These two small, recessed indicators show supervisory and

7

network manager port transmission activity.
SUPV: The supervisory jack provides direct terminal access to control and

8

monitor the 4051. Refer to section Supervisory Port on page 20 for more
information.

LOS: This indicator lights with a loss of signal from the DDS network.

9

Front Panel
Testing

Test Switch

OOF: This indicator shows that the unit detects an out of frame condition or OOF

10

codes are received.
LOOP: This indicator lights continuously when the network interface is in any

11

loopback.
BERT: This indicator shows that a 511-bit BERT is in progress.

12

ERR: This indicat or shows wh en BERT pattern errors ar e detected .

13

The previous section gave a brief description of each front panel control and
indicator. This section explains the front panel test functions. Testing may also be
performed using software control from the 8100A Site Controller or the Te rminal
Interface progra m (refer to chapter Terminal Operation ).

The test switch, labeled FAR/LOC, is used for local testing. When in the FAR
position, the 4051 sends five seconds of the V.54 loop pattern, then switches to the
511 pattern. When transmitting a test pattern, the BERT indicator stays On. The
ERR indicator lights for one second when a bit error or sync loss on the returned
data is detected.

Front Panel Testing 19

V.54 loops take place at the DTE data port
interface and are activated upon receipt of
in-band V.54 loop codes in the network receive
data stream. V.54 loops are either unidirectional

DTE

Figure 3-2 Unidirectional V.54 Loop

Network

(Figure 3-2) and bidirectional (Figure 3-3) Unidirectional loops return the DSU
receive data to the DSU transmit data, and then to the DDS transmit data. Receive
data is unaffected and DSR and DCD are optionally forced Off. In the bidirectional
line loop, network receive data is looped back to the network as network transmit
data. DTE transmit data is looped back through the data port as receive data to the
DTE.

When the test switch is returned to the center
position, the 4051 sends five seconds of V.54
loop down code and then returns to its normal
operating mode.

DTE

Figure 3-3 Bidirectional V.54 Loop

Network

When the Test switch is in the LOC
position, the 4051 performs a network
LLB as shown in Figure 3-4, and the
LOOP LEDs light.

DTE

Figure 3-4 Local Loop

Network

The Local loop is bidirectional or unidirectional and takes place at the D DS
network interface. It returns the DDS receive data to the DDS transmit line and the
DSU tra nsm it data to t he D SU rece ive da ta o utpu t ( see F igu re 3 -4) .

For the Line Loop, Data Loop, and V.54 Loop, the user has a choice of what the
receive data sent to the DTE is. This is determined by the setting of the Loop
Mode option. When set to Unidirectional, the remotely activated loops behave as
follows: The network receive data loops back to the network as network transmit
data and continues to pass through the data port to the DTE. Transmit data from
the DTE is terminated.

When set to Bidirectional, remotely activated loops behave as follows: The
network receive data is looped back to the network as network transmit data.
Transmit data from the DTE is looped back through the data port as receive data to
the DTE.

In addition to activating a local loop, the user may also instruct the 4051 to
transmit in-band V.54 loop code to the remote-end unit, causing it to enter a V.54
loop as described above.

The 4051 does not transmit alternating DSU loop code, DSU latch, DSU unlatch, or
cause sealing current reversal to activate a loop on the remote-end unit.

The test switch is also used when upgrading the 4051 software (see Upgrading
Software on page 20).

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Supervisory Port

Upgrading Software

This 8 -pin modular RS-232 jack provides direct terminal access for controlling the
4051 and gathering status and performance data.

The supervisory port serves several functions. A terminal may be connected to this
port for external software control. A modem may be connected for remote access.
The port supports the call on alarm feature. Refer to section Network Management
Connections on page 10 for connection information.

The FAR /LOC switch is also used to set the SUPV port rate when upgrading
software for the 4051 (see PC Setup on page 39).

4

ERMINAL

T

O

PERATION

Terminal Interface

Components

Screen

This chapter describes the screen structure and menu controls for the Verilink

PRISM 4051 terminal interface. T he interfac e is an embedded firmware

application program.

It requires an ANSI-compatible VT100 terminal (ASCII), or a computer running
an ANSI terminal emulation program. The terminal interface uses ASCII break
and escape functions, which are implemented differently with the various terminal
emulation programs.

Terminal interfa ce screens have several components common to all screens
(Figure 4-1).

Device Type and Revision

The device type (such as PRISM 4051) and the revision control numbers are
shown in the upper left corner. The first number is the hardware revision and the
second number is the software revision. Information is displayed for the near end
unit (connected directly to the terminal) on the top line, and for the far-end unit
(connected to the network DDS interface) on the second line. Refer to this
information when contacting the factory with inquiries.

Near End Device Type/Revision Date
Element ID Time

----------- -------------- ----------- Menu Title --- -------------------------- ---

------------------------------ Diagnostic Messages ----------------------------­Messages Local/Remote Screen Indicator

Figure 4 - 1 Terminal Interface Layout

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4: T

ERMINAL OPERATION

Date/Time

The top ri ght corner of the te rminal s creen dis plays the current date and time. Th e
setting of these functions is described in Utilities on page 37.

Elemen t ID

Below the header (PRISM 4051), the Element ID is displayed. Refer to
Management Parameters on page 34 for information on the Element ID.

Menu Title

The menu title (third line, center) denotes the general classification of functions
currently accessible by the user (such as MAIN or PERFORMANCE).

Near and Far Element

When rem ote acces s is ac tivated on the Mai ntenance screen, the Elem ent field is
displayed to allow selection of the near- or far-end device (element).

Messages

Diagnostic messages may be displayed at the bottom of the screen.

Local/Remote Screen Indicator

Cursor Controls

Field Types

Identifies the visible screen as displaying the local or remote interface.

The terminal interface utilizes a highlighted cursor to make selections from menus
and select fields within screens to be operated on. The cursor is moved in different
ways, depending on the terminal emulation program used. Most programs allow
use of the Tab and Shift + Tab keys. Others allow use of the arrow keys. Once a
field is highlighted, it is manipulated as described in section Field Types.

For keyboards which do not have
these standard keys or have only some
of them, an alternate set of cursor
control commands is provided in
Table 4-1. Each command is
performed by pressing a letter key
while holding down the Control key.
Alternate commands may be freely
mixed with the keyboard commands.

Ta bl e 4- 1 Keyboard /Alternate Commands

Keyboard Command Alternate Command

left arrow Control + S
right arrow Control + D
up arrow Control + E
down arr ow Con trol + X
backspace Control + H
delete Control + Z

Each screen is made up of fields. The two basic field types are user-selectable and
display-only. If the highlighted cursor can be moved to a field, it is a
user-selectab le field. All other fields ar e for d isplay onl y. User-select able field s
allow for changes to be made or commands to be executed.

Fields without brackets or parenthesis are display-only. They cannot be changed on
the screen. Most user-selectable fields are enclosed in brackets or parenthesis and
are described in the following paragraphs.

Software Configuration 23

Fields enclosed in brackets [ ] offer the user a list of selections from which to
choose. The selections may be toggled by pressing the spacebar. Each time it is
pressed, a new item appears. When the appropriate choice is displayed, press Enter
to select it.

Fields enclosed in parenthesis ( ) are manipulated by one of the following two
methods:

• Pres sing En ter on such fields as (R eset) a nd (Start Test) sim ply executes t he
function.

• The most common type of field in parenthesis accepts typed input in the form of
letters and/or numbers. Typing characters when the field is highlighted causes the
current entry to be replaced with the new characters. To edit an existing entry
rather than replace it, press the right arrow key to move the cursor to the point that
needs editing. Characters may then be inserted or deleted. Typed data is always
inserted rather than typed over. If the field is full, though, at least one character
must be deleted to add another.

Many fields of this type may also be toggled by pressing the spacebar. Other fields
are rang e checked, where t he user is not allowed to exit wit h an illegal valu e set.

Software Configuration

Interface Start-up

Any screen may be redisplayed (or refreshed) by pressing Control+U. Any changes to
fields on a screen, that have not been activated by pressing Enter, are discarded.

The terminal interface is a firmware application program embedded inside the
PRISM 4051, which can be accessed through the SUPV port (see Network
Management Connections on page 10) using a Telnet session.

Once a compatibl e terminal is prop erly con nected to t he un it, a termin al interfac e
session is started by sending a break command to the unit (or by pressing Enter
four times). The Main Menu screen is displayed if a password has not been
specified.

If a password has been previously established, the correct password must be
entered to continue the session. The password is case- sensitive. If the password
has been forgotten or is unavailable, note the date and time shown on the screen
and contact Verilink Technical Support. A password can be established through the
Utilities screen on page 37.

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Menu Structure

Alarms Screen

The termi nal interface opens
with a main menu allowing

Log

On

Alarms

four options: Alarms,
Maintenance, Configuration,
and Utilities (Figure 4 - 2).
Each menu scree n allows
accessing the local or far-end
menu screen .

MAIN

MENU

Maintenance

Configuration

DDS Network
Parameters

DTE Port
Parameters

Log

Off

Figure 4 - 2 Menu Structure

If a keystroke is not made for ten minutes, the terminal interface automatically logs
off.

Utilities

The Alar ms screen (Figure 4 -3) allows viewing the curren t alarm status of the
network and the DTE lines.

4051 DDS 255.255/1.02 P R I S M 4 0 5 1 Date: 08/23/96
(Unit Address: 1) Time: 09:11:44

-------------------------------------- ALARMS ----------------------------------

NET Alarms: LOSS
DTE Alarms: NONE

Current Threshold
Loss of Signal Seconds (LOSS): 7874 5
Out of Service Seconds (OOSS): 0 0
Out of Frame Seconds (OOFS): 7874 0

Reset Alarm Registers: (RESET)

------------------------------------ Messages ---------------------------------­NET ALARM

Figure 4 - 3 Alarms S creen

NETAlarms

Software Configuration 25

These status lines
display the selected
element’s current
network signal alarm
state (Table 4-2).
Alarms a re
determined by the
selectable thresholds
in Alarm Parameters
on page 33.

Ta b l e 4 - 2 NET Alarm Indicators

Alarm Description

------- No stat us is available
None No alarm threshold has been exceeded, although errors

may exist which do not exceed thresholds.

ERRS The Errored Seconds, Severely Errored Seconds, or

Bipolar Errored Seconds threshold is exceeded.
LOSS The Loss Of Signal Seconds threshold is exceeded.
OOSS The Out of Service Seconds threshold is exceeded.
OOFS The Out Of Frame Seconds threshold is exceeded.

DTE Alarms

These s tatus lines dis play t he selecte d elem e nt’s current DT E signa l alar m sta te
(Table4-3). The DTR Alarm may be enabled or disabled for the ports in the Port
Parameters screen.

Ta bl e 4 - 3 DTE Alarm Indicators

Alarm Description

None DTR on DTE interface is true or ignored.
DTR DTR on DTE interface is false.

(alarm status)

The main body of the Alarms screen shows the current count for parameters that
may be used to trigger an alarm.

The Current column displays the consecutive seconds during which the error
condition has existed.

The Threshold column displays the values set in the Alarm Configuration screen
(page 33). Parameters having a current value equal to or greater than its non-zero
threshold generates an alarm. Any parameter with a threshold value of zero is
disabled from ge nerating al arms. A n alarm is declare d when the value o f any
parameter exceeds its non-zero threshold.

The parameters shown on the Alarms screen are updated at approximately
five- second intervals.

Reset A larm Regi sters

Pressin g Enter on (RESET) clears the value of all Curren t alarm parameter s.

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Maintenance Screen

The Element Maintenance screen (Figure 4-4) allows performing loop tests and/or
BERT functions on the DDS circuit. This screen also allows activating and
clearing loops and the BERT tester. BERT is performed by using on - board test
facilities. No other test equipment is needed. Some of these tests may also be
activa ted by the front panel switch as described in chapter Operation.

Clear Tests

Pressing Enter on this fie ld clears all local tests and any line loops that have been
initiated.

Clear Alar ms

Pressing Enter on this fie ld causes all near end alarms to be cleared.

Loop

The type of loop is chosen by toggling the spacebar and is executed by pressing
Enter. Options include LOCAL

, V.54, and FAR V.54. Local and V.54 generate

near-end loops. Far V.54 generates a V.54 loop at the far end.

A FAR V.54 loop started from the front panel switch cannot be unlooped from the
Maintenance screen. It must be unlooped from the front panel switch.

Unloop

Pressing Enter takes down the specified loop from the selected port. The type of
loop is chosen by toggling the spacebar and is executed by pressing Enter. Options
include LOCAL

4051 DDS 255.255/1.02 P R I S M 4 0 5 1 Date: 08/23/96
(Unit Address: 1) Time: 09:14:26

------------------------------- ELEMENT MAINTENANCE ----------------------------

(CLEAR TESTS) BERT: [DDS NETWORK]
(CLEAR ALARMS) Test Length: [Cont. ]

Loop: [LOCAL ] Pattern Sync: NO TEST
Unloop: [LOCAL ] Elapsed Time: 00:00:00
Loop More: [BIDIRECTIONAL ] Bit Errors: 0
Errored Seconds: 0
(ACTIVATE REMOTE ACCESS) % EFS: 100

(START TEST)
(RESET ERRORS)

NET Status: LOS OOF
DTE Status: OK
Near Loops:
Far Loops:

------------------------------------ Messages ----------------------------------

, V.54, and FAR V.54.

Figure 4 -4 Element Maintenance Screen

Loop Mode

Software Configuration 27

Gives the user a choice of how the data is to be looped back: BIDIRECTIONAL

or

UNIDIRECTIONAL.

The following loops can be activated on the 4051.

Line Loop.

DDS network interface. The loop is

This loop takes place at the

DTE

Network

activated by the reversal of the
simplex, 20-mA sealing current. This

Figure 4 - 5 Unidirectional Line Loop

loop may be either unidirectional as
shown in Figure 4-5 or bidirectional as

DTE

Network

shown in Figure 4- 6. The
unidirectional line loop ignores the

Figure 4 - 6 Bidirectional Line Loop

DTE transmit data and retransmits the
received DDS data. In the bidirectional line loop, network receive data is looped
back to the network as network transmit data. DTE transmit data is looped back
through the data port as receive data to the DTE.

Data Loop.

loop takes place at the

The data

DTE

Network

data port (DTE)
interface and only when

Figure 4 -7 Unidirectional Data Loop and V.54 Loop

the unit is in DDS I
mode. The data loop is

DTE

Network

activ ated when the 4051
receives alternating loop

Figure 4 -8 Bidirectional Data Loop and V.54 Loop

codes in the network receive data stream. Technically, it is activated by the receipt
of at least four consecutive loop commands and remains looped as long as each
third pattern byte is the loop command. It returns to normal operation after
receiving at least four non-loop command pattern bytes. Data loops may be either
unidirectional as shown in Figure 4-7 or bidirectional as shown in Figure 4-8.

Unidirectional data loops retransmit the DSU received data on the DSU transmit
data including the loop code. Receive data is unaffected (but includes the modified
loop codes) and circuits DSR and DCD are optionally forced Off. In the
bidirectional line loop, network receive data is looped back to the network as
network transmit data. DTE transmit data is looped back through the data port as
receive data to the DTE.

Latching Loop.

The latching loop takes place at the data port (DTE) interface and
only when the unit is in DDS II mode. The latching loop is the same as the data
loop except that it activates upon receiving DSU latching loop code. The latching
loop deactivates upon receiving DSU unlatch loop code.

V.54 Loop.

V.54 loops take place at the DTE data port interface and are activated
upon receipt of in-band V.54 loop codes in the network receive data stream. V.54
loops are either unidirectional (Figure 4- 7) and bidirectional (Figure 4- 8)
Unidirectional loops return the DSU receive data to the DSU transmit data, and
then to the DDS transmit data. Receive data is unaffe cted and DSR and DCD are

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ERMINAL OPERATION

optionally forced Off. In the bidirectional line loop, network receive data is looped
back to the network as network transmit data. DTE transmit data is looped back
through the data port as receive data to the DTE.

Local Loop.

or unidirectional and takes place at the DDS

The Local loop is bidirectional

DTE

Network

network interface. It returns the DDS receive
data to the DDS transmit line and the DSU

Figure 4 - 9 Local Loop

transmit data to the DSU receive data output (see Figure 4 - 9).

For the Line Loop, Data Loop, and V.54 Loop, the user has a choice of what the
receive data sent to the DTE is. This is determined by the setting of the Loop
Mode option. When set to UNIDIRECTIONAL, the remotely activated loops
behave as follows: The network receive data loops back to the network as network
transmit data and continues to pass through the data port to the DTE. Transmit
data from the DTE is terminated.

When set to B IDI RECT IONAL

, remotely activated loops behave as follows: The
network receive data is looped back to the network as network transmit data.
Transmit data from the DTE is looped back through the data port as receive data to
the DTE.

In addition to activating a local loop, the user may also instruct the 4051 to
transmit in-band V.54 loop code to the remote-end unit, causing it to enter a V.54
loop as described above.

The 4051 does not transmit alternating DSU loop code, DSU latch, DSU unlatch, or
cause sealing current reversal to activate a loop on the remote-end unit.

Activate Rem ote Acce ss

Pressing Enter on this fie ld initiates communication with another PRISM 4051
DDS unit at the far end of the network link.

To activate remote access, both the near-end and far-end units must be similarly
configured for DDS I or DDS II.

The near unit transmits an activation signal to the far-end unit for five seconds. At
the end of this period, both units should be in remote access mode. While in this
mode, the DCD and DSR signals to the DTE interface are FALSE and transmit
data from the DTE is not transmitted to the network. The command field also
changes to DEACTIVATE REMOTE ACCESS.

While Remote Access is active, the far-end type and revision information is
displayed in the u pper left corner o f each sc reen. Als o on each screen a field
labeled Element with selectable values of Near and Far appears. Pressing Enter on
this field activates the user interface for the selected element.

To terminate Remote Access, press Enter on the DISABLE REMOTE ACCESS
field. Both units immediately return to normal operation.

During Remote Access, either unit returns to normal operation if communication with
the far-end unit is lost for 30 seconds.

Software Configuration 29

Activating the remote access causes the unit to interrupt network traffic. Network
traffic does not restart until remote access is deactivated.

BERT

These fields control the Bit Error Rate Test feature. BERT is performed on the
NET interface and preempts user data.

Test Length

Defines the run- time of test pattern generation and error accumulation. The
choices are 15 min, 30 min, 60 min, 24 Hour, and Continuous

.

Pattern Sync

This field displays the current state of pattern sync during a test. If no test is in
progress, NO TEST is displayed. If a test is active, but the receiver is not in pattern
sync, NO SYNC is displayed. If the receiver is in pattern sync, IN SYNC is
displayed.

Elapse d Time

Displays the amount of time elapsed since a timed test began or, if completed, the
total test time.

Bit Errors

Displays the total number of bit errors detected since the test began or since error
statistics were cleared (up to 999,999).

Errored Seconds

This field displays the number of asynchronous errored seconds that have been
detected since the test began or since error statistics were last cleared. This
parameter includes bit error seconds and sync loss seconds.

% EFS

This ratio is derived from the number of error free seconds divided by the number
of seconds accumulated in Elapsed Time.

Start Test

Pressing Enter with the cursor on this field starts the selected test pattern. TEST IN
PROGRESS appears once the test has started. To end the test, press Enter on
STOP TEST.

Res et Er rors

Pressin g Enter wi th the cur sor on this field cau ses the test error results to be
cleared to zero.

NET and DTE Status

These two fields display the fault status of the network and the far-end DTE. They
indicate current fault conditions. They do not indicate that alarm thresholds are

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exceeded. Sta tus ind ications are describ ed in th e NET an d DTE Status fields.
Status indications are described in Table 4-4.

Ta b l e 4 - 4 Status Indications

Status Description

------- No sta tus is available
OK No errors are currently detected.
LOS A loss of signal condition exists.
OOF An out of frame condition exists or OOF codes are received.
OOS Out of Service codes are received.
DTR DTR from the DTE device is fals e.

Near Loops

Displays the loop status of the near element.

Far Loops

Displays the loop status of the far element.

Configuration

Screen

The Configuration screens allow viewing and setting configuration parameters for
the network elements. Figure 4- 10 shows the screens and where information about
them is located in the manual.

Configuration Menu

DDS Network

Parameters

page 31

igure 4 - 10 Configuration Menu

To send a new configuration to the unit, press Enter on one of the fields or exit the
screen. The underlined values are the factory default parameters.

Changing any of the configuration settings of an active 4051 causes a brief
synchronization loss.

DTE Port

Parameters

page 32

Alarm

Parameters

page 33

Management

Parameters

page 34

Summary

page 36

Software Configuration 31

DDS Network Parameters

The DDS Network Configuration screen (Figure 4 - 11) allows selecting parameters
for the network interface.

Data Mode.

Choices a re DDS I and D DS II which is a clear channel 64 kbps

without secondary channel.

This field is automatically set to 56K for DDS I and 64K (72K) for DDS II.

Rate.

DDS II mode inserts 64 kbps user data from the DTE into a 72 kbps framed
network signal.

Timing.

This field selects the bit rate clock source. NET uses received network
signal as clock source. INT uses an internal oscillator (± 50 ppm) for clock source.
DTE uses TXC from the DTE interface as the clock source.

Circuit Assurance.

When Ci rcui t A ssur anc e is s et to Off, CT S foll ows RTS. Wh en
RTS transitions to the On state, CTS transitions to the On state after the
RTS-to-CTS delay. CTS transitions to the Off state within one bit time when RTS
transitions to the Off state.

When Circuit Assurance is set to On, CTS follows RTS if DCD is On. When RTS
transitions to the On state, CTS transitions to the On state after the RTS/CTS delay
if DCD is On. CTS transitions to the Off state within one bit time when RTS
transitions to the Off state. CTS is Off if DCD is Off.

When Circuit Assurance is On, RTS should be set to NORMAL on the DTE PORT
parameters. the FORCE DCD option changes to NORMAL when Circuit
Assuranc e is ena bled.

4051 DDS 255.255/1.02 P R I S M 4 0 5 1 Date: 08/23/96
(Unit Address: 1) Time: 09:17:06

-------------------------------- NETWORK PARAMETERS ----------------------------

Date Mode: [DDS II ]
Rate: 64K (72K)
Timing: [NET]
Circuit Assurance: [OFF]
Antistreaming Timer: [OFF]

------------------------------------ Messages ----------------------------------

Figure 4 -11 DDS Networ k Parameters Screen

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Antistreaming Timer.

The An tistreamin g Timer is c ontrolled b y RTS. If RTS
remains On long enough for a timeout to occur, the DDS transmitter sends DMI
[Data Mode Idle (all ones)]. The Antistreaming Tim er is reset when RTS
transition s to the O ff state. Ch oices are O FF

, 10, 30, and 60.

DTE Port Pa rameters

The DTE Port Configuration screen (Figure 4-12) allows setting the operating
paramete rs for the DTE po rts.

Por t Typ e .

The Port Type field displays the installed DTE interface which is either

V.35 or RS-232.

Por t R at e .

Port Rate is determined by the Data Mode selection on the Network

Parameters. T he values are 56K fo r DDS I and 64K for DDS II.

Port Format.

This field shows the data format for the DTE port which is always

synchronous.

This field controls the behavior of the DSR signal during test modes. If

DSR.

TEST>OFF is selected, DSR transitions to the Off state when a loop or BERT test
is active. Option s are F ORCED O N

This field controls the behavior of the DCD signal during an IDLE

DCD.

or TEST>OFF.

condition. When Data Mode Idle codes are received, DCD transition s to Off if this
field is set to IDLE>OFF. This only applies to DDS I mode. Options are FORCED
ON or IDLE>OFF.

If this field is set to NORMAL, the RTS signal controls the transmitter and

RTS.

CTS output signal. If set to FORCED ON

, the RTS input signal is set to On inside

the unit.

4051 DDS 255.255/1.02 P R I S M 4 0 5 1 Date: 08/23/96
(Unit Address: 1) Time: 09:18:24

------------------------------- DTE PORT PARAMETERS ----------------------------

Port Type: RS232D
Port Rate: 64K
Port Format: SYNC
DSR: [FORCED ON]
DCD: [FORCED ON]
RTS: [FORCED ON]
RTS/CTS Delay: [NORMAL]
DTR Alarm: [DISABLE]
V54 Loop: [ENABLE]
LL Detect: [DISABLE]
RL Detect: [DISABLE]

------------------------------------ Messages ----------------------------------

Figure 4 - 12 DTE Port Parameters Screen

Software Configuration 33

RTS/CTS Delay.

This field selects the delay from the RTS transition (to On) to the

CTS trans ition. The delays are:

Normal = 0. 4 ms ± 0.02 ms for DDS I

0.3 ms ± 0.015 ms for DDS II

Long = 0.8 ms ± 0.04 ms for DDS I

0.6 ms ± 0.03 ms for DDS II

Options are NORMAL

DTR Alarm.

This option allows Enabling or Disabling an alarm if the DTR signal

and LONG.

from the DTE device goes false.

V54 Loop.

If set to Enable

This field controls the response to incoming V.54 Loop/Unloop codes.

, the PRISM 4051 can loop and unloop. If set to Disable, loop

codes are ignored.

LL Detect.

This option allows Enabling or Disabling the local loop activation by

the local loopback signal (V.35 pin J or RS-232 pin 18) on the DTE interface.

RL Detect.

This option allows Enabling or Disabling the remote loop activation by
the remote loopback signal (V.35 pin BB or RS-232 pin 21) on the DTE interface.
Remote loopback causes transmission of V.54 loop or unloop codes to the far-end
device.

Alarm Parameters

The Alarm Configuration screen (Figure 4-13) allows reviewing and setting alarm
related t hreshold s for the selected e lement. These thr esholds ar e the minimum

4051 DDS 255.255/1.02 P R I S M 4 0 5 1 Date: 08/23/96
(Unit Address: 1) Time: 09:40:01

------------------------------- ALARM CONFIGURATION ----------------------------

Loss of Signal Seconds (LOSS): [5 ]
Out of Service Seconds (OOSS): [--]
Out of Frame Seconds (OOFS): [--]

Alarm Reset Timer (seconds): [ 30]

------------------------------------ Messages ----------------------------------

Figure 4 -13 Alarm Configuration Screen

34 C

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4: T

ERMINAL OPERATION

acceptable performance levels. To m odify the parameters, highlight the desired
statistic, type in the new value (any number from 0 to 900) and press Enter. If this
value is later surpassed, an alarm indication appears. A field set to (0) causes the
element n ot to alarm on that statistic.

Loss of Signal Seconds.

interrupted. Options are 1, 2, 3, 4, 5

Out of Service Seconds.

code is received. Options are 1, 2, 3, 4, 5, 10, 20, 30, and (- -)

Out of Frame Seconds.

A one-second period in which the DDS received signal is

, 10, 20, 30, and (- -) (none).

A one-second period during which the Out Of Service

(none).

A one-second period in which the Out Of Frame code is
received or a frame sync loss occurred. Options are 1, 2, 3, 4, 5, 10, 20, 30,
and (- -)

Alarm Reset Timer.

before indications are removed. Options are 10, 30

none.

Determines the number of seconds after alarm conditions clear

, 60, 90, 100, 200, 300, 400,

500, 600, 700, 800, 900, and (- - -) (none).

Management Parameters

The Mana gement Ports scre en (Fig ure 4 -14) se ts the fol lowing para meters for the
Call On Alarm (COA) connection on the supervisory (SUPV) port.

COA Connection (SUPV).

This field controls the remote alarm reporting. The

ASCII alarm report type is set by the following choices:

DISABLED

: Alarm reporting is disabled.

4051 DDS 255.255/1.02 P R I S M 4 0 5 1 Date: 08/23/96
(Unit Address: 1) Time: 09:44:36

------------ -------------- ------- Management Port s --------------------------- --

--------------------------------- Supervisory Port ----------------------------­ Loss of Signal Seconds [DISABLED]
Primary Dial String: ( )
Secondary Dial String: ( )
Initialization String: (ATE1QV1s0=1 )
Disconnection String: (ATH )

------------------------------------ Messages ----------------------------------

Figure 4 -14 Management Ports Screen

Software Configuration 35

DIAL: Sends reports through an attached AT- command-set-compatible modem
connect ed to the S UPV serial port , which must dial out to a remote modem. The
message format is described in the Element ID field.

DIRECT: Sends reports to a printer or terminal connected directly to the
supervisory port.

COA messages are reported in the following format in the DIAL or DIRECT
modes only:

Element ID HH :MM:SS MM/DD/Y Y <CR> <LF>
NET Alarms: a larms <CR> <LF>
DTE Alarms: a larms <CR> <LF>

where (alarms) is a string consisting of some or all of the identifiers LOS, OOF,
RAS, AIS, UAS, ERRS, or NONE. The following is an example:

Joesunit 17: 24:55 08/04/93
NET Alarms: L OS
DTE Alarms: D TR

The user-programmable Element ID string (see Utilities Screen on page 37) is
transmitted first to allow the COA function to send a message with a specific
meaning to some host (such as a log on message).

Primary Dial String, Secondary Dial String.

These fields a re ASC II strings for the
primary and secondary call on alarm phone numbers used in the [DIAL] mode.
The strings must include the ATDT command prefix.

The unit makes three attempts to connect using the primary number. If all three
attempts fail, the unit makes three attempts to connect using the secondary number
(if it is not blank). If the secondary number fails, the unit waits five minutes and
then attempts to communicate using the primary number again. When a connection
is detected, the unit outputs the notification message and disconnects.

Initialization String.

The modem initialization string is entered in this field. Refer to
the modem’s documentation for further information. The default setting is
ATEQ0V1.

Disconnection String.

This field i dentifies the character string to b e outpu t when

the modem session is terminated. The default setting is ATH.

36 C

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4: T

ERMINAL OPERATION

Summary

The Summ ary scree n (Figu re 4 -15) is a display- only screen that summa rizes all
the configuration settings in multiple columns. The left column, labeled Current,
shows the settings the unit is running. The middle column, labeled Saved, shows
what settings have been saved into non-volatile memory. The third column, labeled
Switches, shows the settings of DIP switches S1 through S4.

Configuration Item LL/RL Detect reads DIS/DIS, ENA/DIS, DIS/ENA, or
ENA/ENA in the Current and Saved columns depending on how those parameters
were set through a terminal (see DTE Port Parameters on page 32), but only as
DISABLE or ENABLE in the Switches column because both loopback parameters
are controlled by one DIP switch (S1-7, see Local and Remote Loopback Enable
on page 7).

4051 DDS 255.255/1.02 P R I S M 4 0 5 1 Date: 08/23/96
(Unit Address: 1) Time: 09:45:36

-------------------------------------- SUMMARY ---------------------------------

Configurat ion Item
DTE Bit Rate: 64K 64K Serial Num: 065535
Line Bit Rate: 73K 72K Port Type: RS232D
Line Clk Source: NET NET
Loop Mode: BIDIR BIDIR
RTS Delay Norm/Dbl: NORMAL NORMAL
RTS/CTS Norm/On: FORCED FORCED
Data Mode: DDS II DDS II
LL/RL Detect: DIS/ENA DISABLE
DTR Alarm: ENABLE ENABLE
Antistreaming Timer: 30 30
V.54 Loop: DISABLE DISABLE
Circuit Assurance: ON ON
Supv Bit Rate: 19.2K 19.2K
NMS Bit Rate: 19.2K 19.2K
Unit ID: 252 252
Boot Mode: SWITCHES SAVED

------------------------------------ Messages ----------------------------------

Current Saved Switches Other Information

Figure 4 -15 Summary S creen

Software Configuration 37

Utilities

The Utilities screen (Figure 4 - 16) handles the functions described in the following
paragraphs.

Element ID.

This field allows the entry of an ASCII string (up to 29 characters in
length) which identifies the unit to the device receiving the alarm notification
messages. This ASCII string is also displayed at the top of all terminal interface
screens.

Set Time.

The current time may be entered in this field using the 24- hour
HH : MM: SS format. For example, 3:45 a.m. is entered as 0345 and 3:45 p.m. is
entered as 1545.

Set Date.

The current date may be entered in this field using the MM:DD : YY

format. For example, July 4, 1993 is entered as 070493.

New Password.

This field allows entry of a password of up to 10 characters. An
empty string (Enter key only) may be entered to disable the password feature.
After Enter is pressed, the new password is activated and is no longer visible.
Therefore, type carefully when entering a new password and verify before pressing
Enter. When the terminal interface is exited and later reactivated, this password
must be entered exactly to gain access. If the wrong password is entered, the
following message appears:

Incorrect Pa ssword; Please Enter Again.

Do not exit the terminal interface program until the password procedure is fully
understood. If a password has been specified, it must be typed exactly to reenter the

program.

4051 DDS 255.255/1.02 P R I S M 4 0 5 1 Date: 08/23/96
(Unit Address: 1) Time: 09:46:58

--------- --------------- ------------- UTIL ITIES ------------------------ --------

Element ID: ( )

Set Time: (09:46:55)
Set Date: (08/232/96)

New Password: (xxxx xxxxxx)

(Store Parameters to EEPROM)

(MAINTENAN CE RESET)

------------------------------------ Messages ----------------------------------

Figure 4 -16 Utilities Screen

38 C

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4: T

ERMINAL OPERATION

If a password is programmed and later forgotten, contact Verilink Technical
support for a one-time backdoor password.

Store Parameter s to EEPROM: This comman d causes the unit to store all
user-selectable parameters into non-volatile memory. These settings then become
the saved configuration which can be loaded at power-up.

This command causes the unit to restart and interrupts network traffic. Pressing Enter
on this field to activate the command brings up the following warning:

ARE YOU SURE? - THIS WILL

INTERRUPT DDS DATA

(NO!) (YES)

Maintenance Reset.

This field clears all user-selectable parameters, performance
registers, passwords, and alarms but saves the IP Address. All alarm threshold
parameters are set to default values. These settings are then written to non-volatile
memory as the saved configuration.

Pressing Enter on this field brings up the following warning:

DELETE ALL DATA AND

RESTART UNIT?

(NO!) (YES)

To exit this screen without performing the reset function, press Enter with NO
selected. To proceed with the reset function, move the cursor to YES and press
Enter.

The reset operation sets all parameters to the factory default settings.

A

LASH

F

PROM

Required
Equipment

PC Setup

OWNLOAD

D

R OCEDURE

P

This appendix is a step-by-step procedure for downloading the Flash PROM
software for the PRISM 4051.

The following equipment is required to perform the download procedure.

• PC with at least one available RS-232 serial (COM) port.

• A diskette containing the download.exe program.

• A diskette containing one or more hexadecimal files to be downloaded to the unit
(these files have a .hex extension).

Throughout this manual, all factor y default settings are shown underlined.

This operation sets all parameters according to the boot mode switches (see Boot
Mode on page 7) and clears all perfor mance registers. Record the current settings

before performing this procedure.

Power up the PC and create a directory structure to contain the program files.

1

Creating a new directory, such as c:\hex or c:\download, is recommended.

Copy all the files on the supplied diskette to the destination directory noting the

2

complete file names of all hex files, such as 0020-214.hex.

Select the downlo ad.exe file. The Verilink Flash L oader main screen is disp layed

3

(Figure A-1).

Select 4051 at Device Type using the arrow keys to highlight the field and the

4

spacebar to toggle through the list of available products.

Select the Download Method as Switched. Switched requires setting switch S3-8

5

Up to pl ace the unit in a download m ode.

Select the PC serial communications port to be used for the download procedure.

6

The choices are Com1

, Com2, Com3, and Com4.

40 A

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A: F

PROM D

LASH

================================================================================

Device Type: [4051]
Download Method: [Switched]
ComPort: [Com1]
Baud Rate: [19200]

Hex Filename: [0020-214.hex]

==================================== Messages ==================================

OWNLOAD PROCEDURE

Verilink Flash Loader Time: HH:MM:SS

Date: MM/DD/YY
Rev: X.X

Help

Utilities

Download

Exit

igure A-1 Ver ilink Flash Loader Screen

Select the baud rate for configuring the communication program. The valid choices

7

for the 4051 are 19200, 38400

, and 57600 (see Upgrading Software on page 20).
The LOC position forces download at 19200 bps.
The middle position forces download at 38400 bps.
The FAR position forces download at 57600 bps.

The FAR / LOC switch only controls the SUPV port rate for downloading software for
the unit’s Flash PROM. Setting the SUPV port rate for terminal operation is done by

hardware (see SUPV Port Rate on page 9).

Enter the hex file to be downloaded. When the Device Type was selected, the

8

program automatically performed a look-up for existing applicable hex files in the
local directory. If a file is found, it is displayed in this field. This filename can be
accepted or another can be entered.

In Switched mode (step 5 above), verify that the 4051 has Switch S1-8 is in the

9

Up position (see Force Download Mode on page 9) and the front panel FAR/LOC
swit ch is se t to matc h the rate sel ected in step 7. Power resta rt the un it with the
correct sw itches.

Connect the PC serial COM port to the SUPV port of the 4051 with a DB-25 to

10

6-pin modular cable assembly (part number 9 - 1001 - 028- 2). If the COM port has
9 pins, use a 9 - pin to 6-pin modular cable assembly (part number 9 -1001- 025 -2).

From the Flash Lo ader scre en, select the He lp option and fo llow the instr uctions

11

for configuring the baud rate. This operation is different for each device type so
read the instructions carefully. If the baud rate cannot be successfully configured,
contact Verilink Technical Support.

PC Setup 41

The Utilities option is used for saving and restoring the configuration parameters

12

for the 8100A Site Controller.

Select the Download option and press Enter for the download process to begin.

13

The actual downloading procedure overwrites the existing program in Flash. Ensure

that the appropriate file name is selected before pressing Enter on the Download
option. Do not remove power or interrupt the download process in any manner. This can
cause the unit to lose its serial and har dware revision numbers that can only be reinstalled
at the factory.

The process of erasing the Flash can last a couple of minutes. The PC message line
indicates the num ber of re cords sen t:

Records Sent: --

If the entered filename does not exist in the local directory, the following error
message appears:

Cannot find file ---­Upload abort ed, press a key to continue

Once the Flash is erased, the program begins counting the number of data blocks

14

being uploaded. This process takes a few minutes to complete.

Records Sent: ---­Percent Sent: --%

After the software is downloaded to the unit, the PC beeps to indicate completion.

15

Most units automatically reset. Units requiring manual switch settings to enter the
download mode must have their switches manually reset to the correct operating
positions.

Do not remove power until the LEDs stop flashing.

When all files have been downloaded, a factory default maintenance reset

16

operation is recommended (see Maintenance Reset on page 38). This can be
performed through the unit’s terminal interface start- up procedure (see Interface
Start-up on page 23).

42 A

PPENDIX

A: F

LASH

PROM D

OWNLOAD PROCEDURE