Verilink 2000 User Manual

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PRISM 2000

ESF CSU

TRANSPORT

34-00182

Edition

©1997 TxPORT. All rights reserved. No part of this publication may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any language in any form by any means without the written perm ission of TxP ORT.

Reorder # 34-00182

Edition, December 1997

TxPORT shall not be liable for errors contained herein or for incidental or consequential damages in connection with the furnishing, performance, or use of this material. TxPORT reserves the right to revise this publication from time to time and make changes in content without obligation to notify any person of such revision changes.

Contents of this publication may be preliminary and/or may be changed at any time without notice and shall not be regarded as a warranty.

Documentation Disclaimer

TxPORT makes no representation or warranties of any kind whatsoever with respect to the contents hereof and specifically disclaims any implied warranties of merchantability or fitness for any particular purpose.

Table of Contents

1 General

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

Network Interface. . . . . . . . . . . . . . . . . . . . . . 1-2

Equipment Interface. . . . . . . . . . . . . . . . . . . . . 1-2

Clock Sources. . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

Interface Connectors. . . . . . . . . . . . . . . . . . . . . 1-3

Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

User Access Ports . . . . . . . . . . . . . . . . . . . . . . 1-3

Jack Access . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

Alarms. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

Mechanical . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

Environmental. . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

Compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

Industry Listings. . . . . . . . . . . . . . . . . . . . . . . . 1-4

Battery-backed RAM . . . . . . . . . . . . . . . . . . . . 1-4

FCC Requirements . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

Canadian Emissions Requirements . . . . . . . . . . . . . 1-5

Warranty. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

Ordering Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6

TxPORT Customer Service . . . . . . . . . . . . . . . . . . . 1-7

Technical Support . . . . . . . . . . . . . . . . . . . . . . . 1-8

Returns/RMA . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8

2 Installation

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

Safety Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

Unpacking and Inspection . . . . . . . . . . . . . . . . . . . 2-1

Supplied Materials . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

Stand-alone Unit . . . . . . . . . . . . . . . . . . . . . . . 2-2

Chassis Assembly . . . . . . . . . . . . . . . . . . . . . . 2-3

Unit Configuration . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

Configuration Switch S3 . . . . . . . . . . . . . . . . . 2-4

Network LBO . . . . . . . . . . . . . . . . . . . . . . 2-4

DTE LBO . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

CSU Timing Source. . . . . . . . . . . . . . . . . 2-5

Configuration Switch S4. . . . . . . . . . . . . . . . . 2-5

T1.403 Performance Reporting. . . . . . . . . 2-5

Audible Alarm. . . . . . . . . . . . . . . . . . . . . . 2-5

Power-up Mode . . . . . . . . . . . . . . . . . . . . 2-6

Boot from switch settings. . . . . . . . . . 2-6

Boot from RAM . . . . . . . . . . . . . . . . . 2-6

Boot from Manager . . . . . . . . . . . . . . 2-6

Boot from ROM . . . . . . . . . . . . . . . . . 2-6

Supervisory Port B it Rate. . . . . . . . . . . . 2-7

NMS Bit Rate . . . . . . . . . . . . . . . . . . . . . 2-7

Configuration Switch S5. . . . . . . . . . . . . . . . . 2-7

Network Line Framing . . . . . . . . . . . . . . . 2-7

DTE Line Framing . . . . . . . . . . . . . . . . . . 2-8

Network Line Code . . . . . . . . . . . . . . . . . . 2-8

DTE Line Code . . . . . . . . . . . . . . . . . . . . . 2-8

Network AIS. . . . . . . . . . . . . . . . . . . . . . . . 2-8

Network Keep Alive Mode. . . . . . . . . . . . . 2-8

ESF CRC6 Mode . . . . . . . . . . . . . . . . . . . 2-8

ESF Data Link Mode. . . . . . . . . . . . . . . . . 2-8

Configuration Switch S6. . . . . . . . . . . . . . . . . . 2-9

Density . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9

Maintenance Reset . . . . . . . . . . . . . . . . . . . 2-9

NMS Address. . . . . . . . . . . . . . . . . . . . . . . 2-9

DTE Connection . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10

Network Connection . . . . . . . . . . . . . . . . . . . . . . . 2-10

Network Disconnection . . . . . . . . . . . . . . 2-11

Network Management. . . . . . . . . . . . . . . . . . . . . . . 2-11

Supervisory Port . . . . . . . . . . . . . . . . . . 2-11

NMS Connection. . . . . . . . . . . . . . . . . . . . . . . 2-12

NMS IN/OUT . . . . . . . . . . . . . . . . . . . . . 2-12

NMS IN Only . . . . . . . . . . . . . . . . . . . . . 2-13

NMS Split Cable . . . . . . . . . . . . . . . . . . . 2-13

Chassis Network Management . . . . . . . . . . . . 2-14

Alarm Connection. . . . . . . . . . . . . . . . . . . . . . . . . . 2-14

Stand-alone Unit . . . . . . . . . . . . . . . . . . . . . . . 2-14

Internal Audible Alarm . . . . . . . . . . . . . 2-14

Chassis Assembly. . . . . . . . . . . . . . . . . . . . . . 2-15

External Major Alarm Relay . . . . . . . . . 2-15

Power Connection . . . . . . . . . . . . . . . . . . . . . . . . . 2-15

Stand-alone Unit . . . . . . . . . . . . . . . . . . . . . . . 2-15

Chassis Assembly. . . . . . . . . . . . . . . . . . . . . . 2-16

Redundant Power Source . . . . . . . . . . . . . 2-16

Single Power Source. . . . . . . . . . . . . . . . . 2-16

Dual Power Source. . . . . . . . . . . . . . . . . . 2-16

3 Operation

Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

Front Panel Descriptions. . . . . . . . . . . . . . . . . . . . . . 3-1

General Status Indicators. . . . . . . . . . . . . . . . . . 3-1

Alarm Controls and Indicators . . . . . . . . . . . . 3-2

Test Controls and Indicators . . . . . . . . . . . . . . 3-2

Front Panel Testing. . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

Test Switch. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

Test Access Jacks. . . . . . . . . . . . . . . . . . . . . . . . 3-3

Supervisory Port . . . . . . . . . . . . . . . . . . . . . . . . 3-4

BERT Pattern Select . . . . . . . . . . . . . . . . . . . . . 3-4

4 Terminal Operation

Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

System Description. . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

Modem Compatibility . . . . . . . . . . . . . . . . . . . . 4-2

Screen Components. . . . . . . . . . . . . . . . . . . . . . 4-2

Device Type and Revision . . . . . . . . . . . . . 4-2

Date/Time . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

Unit Address. . . . . . . . . . . . . . . . . . . . . . . . 4-2

iii

Menu Title . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

Messages . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

NMS ALARM . . . . . . . . . . . . . . . . . . 4-3

NET ALARM. . . . . . . . . . . . . . . . . . . 4-3

DTE ALARM. . . . . . . . . . . . . . . . . . . 4-3

NET LOOP. . . . . . . . . . . . . . . . . . . . . 4-3

DTE LOOP. . . . . . . . . . . . . . . . . . . . . 4-3

TEST ACTIVE. . . . . . . . . . . . . . . . . . 4-3

FAR END ALARM . . . . . . . . . . . . . . 4-3

FAR END LOOP . . . . . . . . . . . . . . . . 4-3

FAR END TEST ACTIVE. . . . . . . . . 4-3

Interface Start Up . . . . . . . . . . . . . . . . . . . . . . . 4-3

Daisy-Chain Menu Operation . . . . . . . . . . . . . 4-4

Cursor Controls. . . . . . . . . . . . . . . . . . . . . . . . . 4-4

Field Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5

Main Menu Screen. . . . . . . . . . . . . . . . . . . . . . . . . 4-6

Alarms Screen. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7

Element. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7

NET/DTE Alarms . . . . . . . . . . . . . . . . . . . . . . 4-7

alarm status. . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7

Power Loss Seconds . . . . . . . . . . . . . . . . . . . . . 4-8

Reset Alarm Registers. . . . . . . . . . . . . . . . . . . . 4-8

Performance Screens. . . . . . . . . . . . . . . . . . . . . . . . 4-8

Element. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9

Target . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9

USER NET . . . . . . . . . . . . . . . . . . . . . . . . 4-9

USER DTE . . . . . . . . . . . . . . . . . . . . . . . . 4-9

TELCO NET . . . . . . . . . . . . . . . . . . . . . . . 4-9

TELCO DTE . . . . . . . . . . . . . . . . . . . . . . . 4-9

Error Events . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9

Reset Performance Registers . . . . . . . . . . . . . . 4-9

Standard 24 Hour. . . . . . . . . . . . . . . . . . . . 4-9

Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9

Completed Days. . . . . . . . . . . . . . . . . . . . 4-10

Completed Intervals. . . . . . . . . . . . . . . . . 4-10

24 Hr.% Error Free . . . . . . . . . . . . . . . . . 4-10

performance data . . . . . . . . . . . . . . . . . . . 4-10

Maintenance Screen . . . . . . . . . . . . . . . . . . . . . . . 4-11

Clear Tests . . . . . . . . . . . . . . . . . . . . . . . . 4-11

Clear Alarms . . . . . . . . . . . . . . . . . . . . . . 4-11

Test Loops. . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-11

T1 Loop . . . . . . . . . . . . . . . . . . . . . . . . . 4-12

NET LLB. . . . . . . . . . . . . . . . . . . . . 4-12

DTE LLB. . . . . . . . . . . . . . . . . . . . . 4-12

FAR PLB . . . . . . . . . . . . . . . . . . . . . 4-12

FAR LLB . . . . . . . . . . . . . . . . . . . . . 4-12

NET PLB. . . . . . . . . . . . . . . . . . . . . 4-13

T1 Unloop . . . . . . . . . . . . . . . . . . . . . . . . 4-13

Far LLB . . . . . . . . . . . . . . . . . . . . . . . . . . 4-13

BERT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-13

Pattern . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-13

Test Length . . . . . . . . . . . . . . . . . . . . . . . 4-13

Start Test . . . . . . . . . . . . . . . . . . . . . . . . . 4-13

Reset Errors . . . . . . . . . . . . . . . . . . . . . . . 4-13

Pattern Sync. . . . . . . . . . . . . . . . . . . . . . . 4-14

Elapsed Time. . . . . . . . . . . . . . . . . . . . . . 4-14

Bit Errors . . . . . . . . . . . . . . . . . . . . . . . . . 4-14

Errored Seconds . . . . . . . . . . . . . . . . . . . . 4-14

% EFS. . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-14

Line Fault and Loop Status . . . . . . . . . . . . . . 4-14

NET/DTE Status . . . . . . . . . . . . . . . . . . . 4-14

Near Loops. . . . . . . . . . . . . . . . . . . . . . . . 4-14

Far Loops . . . . . . . . . . . . . . . . . . . . . . . . . 4-14

Configuration Screens . . . . . . . . . . . . . . . . . . . . . . 4-15

Line Configuration. . . . . . . . . . . . . . . . . . . . . . 4-15

NET Framing . . . . . . . . . . . . . . . . . . . . . . 4-15

NET Line Code . . . . . . . . . . . . . . . . . . . . 4-15

NET Keep Alive . . . . . . . . . . . . . . . . . . . . 4-15

AIS . . . . . . . . . . . . . . . . . . . . . . . . . . 4-16

ONES . . . . . . . . . . . . . . . . . . . . . . . . 4-16

LOOP . . . . . . . . . . . . . . . . . . . . . . . . 4-16

NET->DTE CRC . . . . . . . . . . . . . . . . . . . 4-16

NET LBO . . . . . . . . . . . . . . . . . . . . . . . . . 4-16

PRM Generation. . . . . . . . . . . . . . . . . . . . 4-16

Zero Suppression . . . . . . . . . . . . . . . . . . . 4-16

DTE Framing . . . . . . . . . . . . . . . . . . . . . . 4-16

DTE Line Code . . . . . . . . . . . . . . . . . . . . 4-17

DTE Keep Alive . . . . . . . . . . . . . . . . . . . . 4-17

AIS . . . . . . . . . . . . . . . . . . . . . . . . . . 4-17

ONES . . . . . . . . . . . . . . . . . . . . . . . . 4-17

LOOP . . . . . . . . . . . . . . . . . . . . . . . . 4-17

DTE->NET CRC . . . . . . . . . . . . . . . . . . . 4-17

DTE DSX Level. . . . . . . . . . . . . . . . . . . . 4-17

FDL Pass Through . . . . . . . . . . . . . . . . . . 4-17

Audible Alarm . . . . . . . . . . . . . . . . . . . . . 4-18

Alarm Configuration. . . . . . . . . . . . . . . . . . . . 4-18

Errored Seconds . . . . . . . . . . . . . . . . . . . . 4-18

Severely Errored Seconds. . . . . . . . . . . . . 4-18

Loss of Signal Seconds. . . . . . . . . . . . . . . 4-18

Unavailable Seconds. . . . . . . . . . . . . . . . . 4-19

DTE LOS/LOF Seconds . . . . . . . . . . . . . 4-19

Remote Alarm Seconds . . . . . . . . . . . . . . 4-19

AIS Seconds. . . . . . . . . . . . . . . . . . . . . . . 4-19

Out of Frame Seconds . . . . . . . . . . . . . . . 4-19

BPV Seconds . . . . . . . . . . . . . . . . . . . . . . 4-19

Alarm Reset Timer. . . . . . . . . . . . . . . . . . 4-19

Go to Line Settings. . . . . . . . . . . . . . . . . . 4-19

Utilities Screen. . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-19

General Functions . . . . . . . . . . . . . . . . . . . . . . 4-20

Set Time . . . . . . . . . . . . . . . . . . . . . . . . . . 4-20

Set Date . . . . . . . . . . . . . . . . . . . . . . . . . . 4-20

New Password . . . . . . . . . . . . . . . . . . . . . 4-20

Maintenance Reset . . . . . . . . . . . . . . . . . . 4-20

COA Parameters. . . . . . . . . . . . . . . . . . . . . . . 4-21

Alarm Notification . . . . . . . . . . . . . . . . . . 4-21

OFF . . . . . . . . . . . . . . . . . . . . . . . . . . 4-21

DIRECT . . . . . . . . . . . . . . . . . . . . . . 4-21

DIAL . . . . . . . . . . . . . . . . . . . . . . . . . 4-21

DIAL NMS . . . . . . . . . . . . . . . . . . . . 4-21

Primary Phone# , Secondary Phone# . . . . 4-21

Element ID . . . . . . . . . . . . . . . . . . . . . . . . 4-21

Figure 1-1

TxPORT 2000 CSU

ENERAL

Introduction

The TxPORT 2000 CSU (Cha nnel Serv ice Un it) is an advanced performance monitoring unit providing an intelligent interface between customer premises equipment (CPE) and carrier T1 facilities.

The unit is responsible for providing the proper electrical interface to the T1 circuit and for shaping and regenerating the 1.544 Mbps signal. The CSU monitors transmission for conformance to the ones density requirements as well as providing facility performance data, telco status, alarm reporting, and local /remote testing and fault diagnosis.

The CSU is equipped with dual register sets that hold line statistics for both the telco and user. The unit includes multiple ports for access to statistics, remote control, configuration, and management. It provides administration, test, diagnostics and control over the T1 ESF or D4 network. The unit also provides AMI/ B8ZS and D4/ ESF options in either T1 direction.

TRANSPORT

2000

ESF CSU

ACO SW

BV/CR/FE

LOS/OOF

AIS

REM ALM

LOC ALM

FRM NET

N E T

DENSITY

STATUS

ACO

D T E

LLB

PLB

TST

ERR

NET

MONMON

T S T

LOCFAR

The CSU provides end - to - end in-band protocol via the ESF facility data link. This allows one CSU to interr ogate and cont rol a remote CS U (following the 54016 FDL TABS protocol). In addition, many new request and response FDL messages have been added to enhance the CSU’s operation.

The CSU is available as a stand - alone unit or for use in a multi-unit chassis holding up to 12 CSUs. The chassis can consolidate the CSU requirements of an entire network node. All CSUs in a network may be controlled from a centrally located unit. Configuration, status, and diagnostic commands may be issued to all units at the local CSU from the TxPORT EM8000 Element Manager or the 8100A Site Controller.

DTE

S U P V

PAT SEL

FRM DTE

1-2 GENERAL

Features

✦ Stand - alone or nest mounting ✦ D4-to-D4, D4-to-ESF, ESF-to-D4, or ESF-to-ESF framing ✦ AMI or B8ZS line coding or AMI to B8ZS conversion ✦ Front panel test access jacks ✦ RS-232 supervisory and network manager ports ✦ Separate user and telco performance registers with a 30- day history ✦ User and telco access via the ESF facility data link ✦ BERT with multiple patterns and selectable looping tests ✦ End - to - end user control and access to unit performance data, unit configuration,

and unit status (normal, looped, and alarm)

✦ Optional EM8000 Element Manager and 8100A Site Controller ✦ Programmable threshold alarms with audible output to indicate a local alarm condition ✦ Full ALBO levels (telc o) and DSX l evels (user) ✦ Field software upgrades (Flash PROM memory)

Specifications

Network

Interface

Equipment

Interface

✦ Battery-backed RAM configuration storage

Line Rate: 1.544 Mbps, ± 50 bps for internal clock, ± 200 bps in

through mode Line Framing: D4 or ESF Line Code: AMI or B8ZS Line Impedance: balanced 100 Ω (± 5%) Input Signal: DS1, 0 to -27 dB (ALBO) Output Signal: 3.0 V (±15%), base-peak into 100 Ω Line Build Out: 0, -7.5, -15, and -22.5 dB attenuation Line Protection: 1000 V lightning, fused inputand output Jitter Control: per TR 62411 and T1.403 Pulse Density: per TR 62411

Line Rate: 1.544 Mbps, ± 50 bps for internal clock, ± 200 bps in

through mode Line Framing: D4 or ESF Line Code: AMI or B8ZS Line Impedance: balanced 100 Ω (± 5%) Input Signal: DSX1 to - 6 dB

Specifications

Output Signal: Selectable DSX1 level from 0 to 655 feet in six

incrementa l levels

Line Protection: 1000 V lightning, fused input and output

1-3

Clock

Sources

Internal: 25 ppm (1.544 MHz), 1.5 ppm option Receive: 100 ppm, 1.544 MHz External (optional): - 27 dB T1 signal at 1.544 MHz Time of Day: Internal clock battery backup set by the network manager

Interface

Connectors

Network: RJ-48C 8 - pin modular jack DTE: RJ-48C 8 - pin modular jack

External CLK: RJ-48C 6 - pin modular jack SUPV port: RJ-11 6- pin modular jack

NMS port: RJ-11 6- pin modular jacks (two) Power: Terminal strip Alarm: Terminal strip

Diagnostics Loopbacks: Line loopback and payload loopback on the network

interface; Line loopback on the DTE interface

Network BERT: QRSS, 63, 511, 2047, 2

, 220, 223, 1:8, 3:24, Alternate,

and Clear

User Access

Ports

Jack

Access

Supervisory: RS-232, 1200 to 19,200 baud Network Manager: RS-232, 1200 to 19,200 baud

Toward Network: Bantam jacks In, Out, and Monitor Toward DTE: Bantam jacks In, Out, and Monitor

Alarms Activation: Programmable thresholds

Reporting: NO or NC contacts, NMS, front panel LEDs, internal buzzer Contact Ratings: UL 0.3 A at 110 VAC

1.0 A at 30 VDC

Power DC Power: 19 to 60 VDC, 4.3 W, 15 BTU maximum

Connection: Terminal block

Mechanical Mounting: desktop, wall, horizontal rack, or vertical rack

Dimensions: 1.72" W, 6.8" H, 10.5" D Weight: 2 lbs

1-4 GENERAL

Environmental

Compatibility

Industry

Listings

Battery-backed

RAM

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

TR 54016 TR 62411 ANSI T1.403

FCC Compliance: Part 15 Subpart B, Class A FCC Part 68 Reg. #:FXKUSA - 74451 -DE - N UL Approved E110448 CSA Certified: LR98859 DOC / CSO3: 1653 5188 A

The unit’s configuration and operating parameters are stored in nonvolatile RAM memory. In case of a power outage and if the DIP switches are set to boot from RAM, the unit’s memory is checked during power up. If the RAM has been compromised, the unit’s configuration reverts to the options set with the remaining DIP switches.

FCC Requirements

WARNING: Changes or modifications to this unit not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment.

This device complies with Part 15 of the FCC rules. Operation is subject to the following two conditions:

✦ This device may not cause harmful interference. ✦ This device must accept any interference received, including interference that may

cause undesired operation. 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 energy and if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this e quipment in a re sidentia l area is likely to c ause ha rmful interference. The user will be required to correct the interference at his own expense.

Shielded cables must be used with this unit to ensure compliance with the Class A

FCC limits.

Notice to Users of 1.544 Mbps Service: The following instructions are provided to ensure compliance with FCC Rules, Part 68.

1 All direct connections to T1 lines must be made using standard plugs and jacks.

Canadian Emissions Requirements

Before connecting your unit, you must inform the local telephone company of the

following information: Port ID: P / N/12 - 00635 REN / SOC: 6.0 N FIC (Facili ty Interface Code): 04DU9- BN

04DU9 - DN 04DU9 - IKN 04DU9 - ISN

USOC jack: RJ-48C

RJ-48H

If the unit appears to be malfunctioning, it should be disconnected from the

telephone lines until you learn whether the source of trouble is your equipment or the telephone line. If your equipment needs repair, it should not be reconnected until it is repaired.

The unit has been designed to prevent harm to the T1 network. If the telephone

company finds that the e quipment is excee ding tolerab le parameters, th ey can temporarily disconnect service. In this case, the telephone company will give you advance notice, if possible.

1-5

Canadian Emissions Requirements

Under FCC rules, no customer is authori zed to re pair this equipmen t. This

restriction applies regardless of whether the equipment is in or out of warranty. If the telepho ne comp any alters their equipme nt in a ma nner that wil l affect the u se

of this device, they 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 with the FCC.

The attached affidavit must be completed by the installer.

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.

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.

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 ministère des Communications du Canada.

Warranty

TxPORT warrants each unit against defects in material and workmanship for a period of five years from the date the unit was shipped to the customer. If the unit malfunctions at any time during the warranty period, TxPORT will repair, or at TxPORT’s option, replace the unit free of charge.

1-6 GENERAL

The remedies listed herein are the users sole and exclusive remedies. TxPORT shall not be liable for any indirect, direct, incidental or consequential damages. The owner must return the unit to the factory, shipping prepaid and packaged to the best commercial standard for electronic equipment. TxPORT will pay shipping charges for del ivery on return. The c ustomer is res ponsible fo r mode and cost o f shipment to TxPORT. This warranty does not apply if the unit has been damaged by accident, misuse or as a result of service or modification by other than TxPORT personnel.

Ordering Numbers

The unit is shipped from the factory with the 2000 CSU reference manual and a 6 - pin mo dular cable from NMS IN to NMS OUT. Refer to Table 1-2 for the optional equipment part numbers.

The part num bers for the st and - al one unit and th e modular cha ssis unit are s hown in Table 1-1.

Ta b l e 1 -1

Part Number Descriptio n

F-2000-100-1

F-2000-101-1

PRISM 2000 Unit Option Numbers

2000 ESF CSU Stand -alon e Unit

Backplane option

RJ-48C NET/RJ-48C DTE

RJ-48C NET/DB-15 DTE

DB-15 NET/DB-15 DTE

Surge-protection option

No surge protection

Surge protection

2000 ESF CSU Modu le (chassis)

Chassis option

1051 chassis

Telco chassis

K-type chassis

Surge-protection option

No surge protection

Surge protection

For example, the default part number for the stand- alone unit is F-2000-100-111. This is a unit with RJ-48C backplane connectors for both the network and DTE.

TxPORT Customer Service

1-7

The accessories shown in Table 1-2 may also be needed for the installation and operation of the 2000 CSU.

Ta b l e 1 -2

Part Number Description

9 - 10 01 -0 27 -1 9 - 10 01 -0 27 -2 9 -10 01-0 28-1 9 -10 01-0 28-2 9 - 1001-0 29 - 2 DB-9 to 6 - pin female, (Terminal to SUPV) 9 - 1001-0 40 - 1 6- pin modular NMS t o NMS cable (incl.) 9 - 1001- 042 -1 9 - 1001- 042 -2 33 - 000 85 33 - 000 86 9 - 2000 - 036 -- 1 Stand - alone to rack mount conversion

F - 1051 - 000 - - 112 Twelve- slot 1051 chassis with RJ-48C and DB-25 backplane

9 -2000- 001--1 9 -2000- 001--2 9 -2000- 002--1 9 -2000- 002--2 30-0 0087 Stand-alone wall mount power supply (-48 VDC / 200 mA) F - 1040 - 000 - - 110 9 - 10 00-48 V -1 F - 1041-000 - - 110

9 - 1000- 48V -2 9 - 8000- 001 -1

9 - 8000- 001 -2 9 - 1001 - 04 8 - 1 Y male adapter /cable, DB-25 to two 6-pin NMS ports, 10 ft. (splits

Optional Equipment

DB-25 to 6 - pin male (Modem to SUPV) DB-25 to 6-pin female (Modem to SUPV) DB-25 to 6 - pin male (Terminal to SUPV) DB-25 to 6 -pin f emale (Terminal to SUPV

Dual 6 - pin mod to DB-25 male Dual 6 - pin mod to DB-25 female Bantam to bantam test cord - red Bantam to bantam test cord - black

module with DB-25 to 6- pin adapter

connectors 19" single unit rack mount bracket 19" dual rack mount bracket 23" single unit rack mount bracket 23" dual rack mount bracket

1040 power shelf (type 400 mechanics) w/o power supplies One - 48 V /2 A power supply (1040 holds 2) Redundant 1041 power shelf (typ e 400 mechanics) w/o power

supplies One - 48 V /2 A power supply (1041 holds two) EM8000 with manual on 3-1/2 inch disk (DOS and UNI X version,

respectively)

EM8000 In/Out)

TxPORT Customer Service

TxPORT office hours are Monday through Friday from 8 a.m. to 5 p.m Central Time. For general, sales and marketing information, contact TxPORT at:

Toll Free: 888 - 4TxPORT Toll Free: 800- 926 -0085 Local: 205- 772 - 3770 International: 205 - 772 - 3770 e-mail: info@txport.com

1-8 GENERAL

Technical

Support

Returns/RMA

Technical support is available 24 hours a day, seven days a week. You may contact a support representative by telephone or e-mail.

Toll Free: 800- 285 -2755 Local: 205- 772 -3770 International: 205 - 772 - 3770 e-mail: support@txport.com

If for any reason you need to return a TxPORT unit, you must have a Return Material Authorization (RMA) number marked on the shipping package. An RMA number from may be obtained from customer service at 888 - 4TxPORT; 800 - 926 - 0085, ext. 2227; or for local or international customers 205 - 772 - 3770.

When calling TxPORT for an RMA, please have the following information availab le .

✦ Model number and serial number for each unit. ✦ Reason for return and symptoms of problem. ✦ Warranty sta tus (if known). ✦ Purchase order number to cover charges for out- of -warranty items. ✦ Name and phone number of person we can contact if we have questions about the

unit(s).

✦ Mode of shipment required (second-day air is the normal mode of shipment for all

returned material unless otherwise specified). Units being re turned to TxP ORT should be sent to the following addres s:

TxPORT 127 Jetplex Circle Madison, Alabama 35758

NSTALLATION

Introduction

Safety Summary

Unpacking and Inspection

This chapter contains information and instructions required to prepare the TxPORT 2000 CSU for use. Included are initial inspection procedures, mounting instructions, configuration guidelines, connection instructions, and powering information.

Throughout this manual, all factory default settings are underlined.

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.

The WARNING sign denotes a hazard to the operator. It calls attention to a procedure or practic e whic h, if not c orrect ly pe rforme d or ad hered to, could r esul t in in jur y or loss

of life. Do not proceed beyond a WARNING sign until the indicated conditions are fully understood and met.

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

This unit is carefully packaged to prevent damage in shipment. Upon receipt, inspect the shipping container for damage. If the shipping container or cushioning material is damaged, notify the carrier 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.

Supplied Materials

If the contents of the shipment are incomplete or, if there is mechanical damage or defect, notify TxPORT. If the shipping container is also damaged, or the cushioning material shows signs of stress, notify the carrier of the damage as well as TxPORT. Keep the shipping materials for carrier’s inspection. TxPORT will arrange for repair or replacement without waiting for claim settlement.

The 2000 CSU is shipped from the factory with the following equipment:

✦ 2000 CSU Reference Manual ✦ 6 - pin modular cable from NMS IN to NMS OUT

The following addi tional materia ls may be require d for the instal lation and operation of the 2000 CSU.

✦ - 48 VDC power source

2-2 INSTALLATION

✦ Network and DTE interface cables ✦ Bantam test cables ✦ Supervisory port cable (stand- alone unit) ✦ 20 - gauge stranded wire (or similar) for DC power and alarm connection

For specific applications, the user may require additional cables and adapters. The interface requirements of any application may be met by using the appropriate cable. Standard cables and ordering numbers are listed in Table 1-2 on page 1- 7. Contact TxPORT for any needed assistance in cable selection.

Mounting

Stand - alone

The TxPORT 2000 CSU is a modular unit that plugs into either a single-unit housing or into a chassis that holds up to 12 units. Single units are designed for stand - alone desktop use, wall mounting, or chassis mounting (in either a vertical or horizontal orientation). The unit uses an interchangeable front panel to accommodate the chassis card cage.

To access the circuit boards and configuration switches, perform the following

Unit

procedure. Observe proper electrostatic device handling procedures while holding the circuit boards.

1 Open the front panel access door and remove it by gently bending the plastic from

the middle using both hands.

2 Pull the two side strips of plastic from the middle outwards until the four stops are

clear of the front panel.

3 P ull the cover off the front p anel. 4 Remove the two screws and pull the front panel and circuit boards out of the

housing. The stand-alone unit may be used in a chassis installation with the following

modifications:

1 Remove the housing as described above and then remove the four screws holding

the front panel to the circuit boards.

2 Replace the stand - alone front panel with a module-type front panel.

The unit now slides into one of the 12 slots in the chassis.

Unit Configuration

2-3

Chassis

Assembly

Unit Configuration

Up to 12 units may be inserted into a chassis and the chassis may be installed in a 19-inch or 23-inch rack using four screws. Connections are made from the rear of the chassis. Refer to Figure 2-9 and Figure 2-10 on page 2 - 17 for these illustration s.

The 2000 CSU may be configured and controlled in a variety of modes. For use without the intelligent Terminal Interface, the EM8000 Network Manager, or the 8100A Site Controller, the CSU can be configured from several switches accessible along the side of the circuit boards (see Figure 2-1).

For more functionality, the CSU can be software controlled from a terminal via the RS-232 serial port connected to the unit. The Terminal Interface application program is firmware embedded in each CSU and is discussed in the Terminal Operation chapter of this manual. The EM8000 Network Manager and 8100A Site Controller provide a similar set of capabilities (refer to the EM8000 or 8100A reference manua l).

The following pages briefly discuss the switch configuration options of the CSU. This installation guide assumes that the user understands the meaning of each setting and knows how the unit is to be configured.

Three 8-position DIP switches are located on the circuit board. The numbering system used for each switch position is as follows: Position 2 of Switch S3 is referred to as Switch S3 - 2, and so on. Each switch may be placed in either the up or down position, with down being next to the switch position number printed on the switch body.

In addition to the three configuration DIP switches, there is a 10 - position DIP switch used to set the CSU unit address for use with the EM8000 Network Manager or 8100A Site Controller. Also, a slide switch is used to enable and disable the sealing current and a jumper is used to select the alarm relay mode.

Before installation, verify each configuration switch setting. Two removable configuration guides are included in the rear of this manual to record option selections for future reference. Differences in the use of configuration switches between the CSU stand-alone unit and the CSU chassis mount module are noted in the appropriate places.

S3 S4

LBO/Clock

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 9 10

Configuration

Alarm

S5 S6

Configuration

NMS Address

Figure 2-1

Circuit Board View

2-4 INSTALLATION

Configuration

Switch S3

Switch S3 (Fig ure 2- 2) is used to set the configuration pa rameters listed in the following paragraphs. Refer to the Terminal Operation chapter of this manual for more information on the related software-controlled configuration commands.

NET LBO

DTE Level

Clock Source

Dn Up

Figure 2-2

Switch S3

7654321 8

Network LBO

Positions S3-1 and S3 - 2 set the line build out signal level of the transmit data (TXD) from the unit to the network. The output level is factory set at 0 dB

. It may be attenuated by - 7.5 dB, - 15 dB, or -22.5 dB if operating conditions require that it be changed. The telco should provide the proper setting to the user.

If unsure of the exact settin g, then leave it at the d efault value. The values are listed in Table 2-1.

Ta b l e 2 -1

Network LBO

S3 -1 S3 -2 Network LBO

Dn Dn 0 dB Dn Up -7.5 dB Up Dn -15.0 dB Up Up -22.5 dB

DTE LBO

Positions S3-3, S3- 4, and S3 - 5 set the line build out to one of the values listed in Table 2-2. The transmit o utput level is selectabl e according to the cable length between the DTE port and the attached equipment. The factory default setting is 0 -110 feet

Ta b l e 2 -2

S3 - 3 S3 - 4 S3- 5 DTE LBO

Dn Dn Dn 0 -110 ft Dn Dn Up 110-220 ft Dn Up Dn 220-330 ft Dn Up Up 330-440 ft Up Dn Dn 440-550 ft Up Dn Up 550-655 ft

Up Up Dn > 655 ft Up Up Up Square

DTE LBO

Unit Configuration

2-5

CSU Timing Source

In the normal mode of operation, CSUs clock out transmit data toward the network using the timing derived by the data received from the DTE. Data transmitted toward the DTE is clo cked out using the timing derived by the data received from the networ k.

For unique applications, the 2000 CSU allows timing to be derived from a single source for data transmitted toward both the network and DTE. Positions S3- 6, S3 - 7, and S3 - 8 are used to set the CSU’s transmit timing source to one of the values listed in Table 2-3.

Configuration

Switch S4

Ta b l e 2 -3

S3 - 6 S3-7 S3 - 8 Timing Source

Dn Dn Dn Normal Up Dn Dn Internal Up Up Dn Network Up Up Up DTE

For normal operation, S3 - 6, S3 - 7, and S3 - 8 should all be set to the Down position.

Timing Source

Switch S4 (see Figure 2-3) is used to set the configuration parameters listed in the following paragraphs. Detailed information on the connection and use of the Supervisory and NMS ports is found in Network Management on page 2- 11.

T1.403 PRM

Audible Alarm

Boot Mode

SUPV Rate

NMS Rate

Dn Up

Figure 2-3

Switch S4

7654321 8

T1.403 Performance Reporting

The 2000 CSU conforms to ANSI standard T1.403. However, it allows turning the performance report message (PRM) On or Off with Switch S4- 1.

Down: PRM enabled Up

: PRM disabled

Audible Alarm

Position S4- 2 enables the piezo buzzer, which indicates an alarm condition.

: Disabled Up: Enabled

Down

2-6 INSTALLATION

Power-up Mode

Positions S4- 3 and S4 - 4 are used to set the power-up configuration mode of the 2000 CSU as shown in Table 2-4.

Ta b l e 2 -4

S4 - 3 S4-4 Power Up (Boot) Mode

Dn Dn Boot from Switches Dn Up Boot from RAM Up Dn Boot from Manager Up Up Boot from ROM

Boot from switch se ttings. When reset, the unit reads its configuration from all the

Power-up Mode

hardware sw itch settings .

Boot from RAM. When reset, the unit reads its configuration from the internal,

battery-backed RAM.

Boot from Manager. When reset, the unit requests configuration information from

the EM8000 Element Manager or the 8100A Site Controller. If the manager is not on - line, the unit boots from RAM.

Boot from ROM. When reset, the unit reads its configuration from the internal

ROM. The ROM factory default settings are as follows.

NET Framing: ESF DTE Framing: ESF NET Line Code: AMI DTE Line Code: AMI NET Keep Alive: Unframed all ones DTE Keep Alive: Unframed all ones CRC6: Regenerate FDL: Terminate Timing: Normal Looped NET LBO: 0 dB DTE DSX level: 0 - 110 feet T1.403 PRM: Enabled Zero Suppression: Enabled Audible Alarm: Disabled

Unit Configuration

2-7

Supervisory Port Bit Rate

Positions S4- 5 and S4 - 6 are used to set the supervisory port bit rate. This is a serial RS-232 DCE port configured for 8 bits, no parity, and 1 stop bit. Table 2-5 shows the available speed s.

Ta b l e 2 -5

S4 -5 S4 - 6 SUPV Port Bit Rate

Dn Dn 19200 bps Dn Up 9600 bps Up Dn 2400 bps Up Up 1200 bps

SUPV Port Bit Rate

NMS Bit Rate

Positions S4- 7 and S4- 8 are use d to set the NM S port bit rate. This is a serial RS-232 DCE port configured for 8 bits, no parity, and 1 stop bit. Table 2-6 shows the available speeds.

Ta b l e 2 -6

S4 - 7 S4 - 8 NMS Port Bit Rate

Dn Dn 19200 bps Dn Up 9600 bps Up Dn 2400 bps Up Up 1200 bps

NMS Port Bit Rate

Configuration

Switch S5

Switch S5 (Fig ure 2- 4) is used to set the configuration pa rameters listed in the following paragraphs.

NetworkD4DTED4Network

Dn Up

ESF

Network

Figure 2-4

ESF

DTE

Switch S5

Network

B8ZS

AMI

DTE

B8ZS

AMI

DTE

AIS

Framed

Unframed

Keep Alive

CRC

Looped

FDL

Pass

7654321 8

AIS

Keep Alive

CRC

Regenerate

FDL

Terminate

Network Line Framing

Position S5- 1 is used to match the CSU to the framing of the network line.

: ESF Up: D4

Down

2-8 INSTALLATION

DTE Line Framing

Position S5-2 is used to match the CSU to the framing of the DTE line. The DTE and network line framing do not have to be the same.

Down

: ESF Up: D4

Network Line Code

Position S5- 3 is used to set the network line coding.

Down: AMI Up

: B8ZS

DTE Line Code

Position S5- 4 sets the DTE line coding. The DTE and the network line code setting do not have to be the same.

Down: AMI Up

: B8ZS

Network AIS

Position S5- 5 is used to set the all ones signal sent out to the network in a Keep Alive condition to either framed or unframed. The framed position adds framing information to the Keep Alive signal.

: Unframed all ones Up: Framed all ones

Down

Network Keep Alive Mode

Position S5-6 is used to select the action which occurs upon a DTE loss of signal.

: Send AIS Up: Loop network (RXD to network TXD)

Down

ESF CRC6 Mode

Position S5- 7 determines whether the cyclic redundancy check (CRC) code is regenerated as data passes through the CSU or whether the CRC is passed through unchanged.

: Regenerate Up: Pass

Down

ESF Data Link Mode

Position S5- 8 determines if the received facility data link (FDL) is terminated in the CSU or is passed through unchanged.

: Terminate Up: Pass

Down

Unit Configuration

2-9

Configuration

Switch S6

Switch S6 (Fig ure 2- 5) is used to set the three configurat ion parameters lis ted in the following par agraphs.

MSB LSBBinary Values

128

Dn Up

Reset

Density

Figure 2-5

Switch S6

7654321 8 910

Density

Position S6- 1 determines ones-density control. Enabled

allows ones-density insertion after 15 successive zeros (per TR62411). Disabled ignores density control and allows 175 zeros to pass towards the network.

: Enable Up: Disable

Down

Maintenance Reset

Position S6- 2 performs a factory default hardware reset. To execute a reset, disconnect power and set this switch to On. Reconnect power to the unit. After the CSU cycles the front panel LEDs, the reset function is completed. Disconnect power to the unit again and reset the switch to the Off position. If left in the On position, and the unit is powered up at a later date, all software configuration settings are lost.

: Reset OFF Up: Reset ON

Down

NMS Address

Positions S6-3 through S6-10 define the unit address. When using the TxPORT 8100A Site Controller or the EM8000 element manager with the 2000 CSU or other network manager controlled products, each element in a group must have a unique unit address. Up to 250 units can exist in a group. Refer to NMS Connection on page 2- 12 for instructions on connecting the stand- alone CSU in an NMS loop.

If the CSU is not connected to a network manager, the unit address should be left at the factory d efault setting of 1

. More detailed information on NMS addressing may be found in the 8100A Site Controller and EM8000 Element Manager reference manua ls.

The eight positions on Switch S6 are used to create an 8- bit binary code for an address in the range of 1 to 250. Switch position S6 - 3 is the most significant bit (MSB) and S6-10 is the least significant bit (LSB). If a switch is Down, its value is 0 and if it is Up, its value is that of the upper location. The values are additive.

For example, to set a unit address to five (5), position S6 - 8 (binary value = 4) and position S6- 10 (binary value = 1) would be set Up for a unit address of 5 (4 + 1). All other positions would be set Down.

2-10 INSTALLATION

DTE Connection

Network Connection

The equipmen t side DTE interfa ce of the CSU is a DS X interface. The DTE line build out (LBO) level should be set as instructed in Configuration Switch S3 on page 2 - 4.

The DTE physical interface for both the stand - alone unit and the chassis mounted unit is a standard RJ-48C 8 - pin modular jack. A DB-15 backplane is also an option for the network and DTE interfaces. The pinout assignments are shown in Table 2-7.

Ta b l e 2 -7

Pin RJ-48 Interface Pin DB-15 Interface

1 Data Out 1 Data In 2 Data Out 2 Frame Ground 3, 6 Not Used 3 Data Ou t 4 Data In 4 Fram e Ground 5 Data In 9 Data In 7, 8 Chassis Ground 11 Data Out

DTE RJ-48 and DB-15 Interface Pinouts

The network sid e of the CSU is referred to as the network interface. This interface contains an ALBO to allow the unit to be located a substantial distance away from the telco n etwork inte rface (rece ive signal level down to -27 dB).

The network inte rface line build out (LB O) levels should be adju sted as instruc ted in on page 2- 4. The maximum suggested cable lengths for units connected to the network are listed in Table 2-8.

Ta b l e 2 -8

Cable Type Loss per 1000' Max. Length

26-gauge PIC 6.8 dB 4 ,400 ft 24-gauge PIC 5.4 dB 5 ,500 ft 22-gauge PIC 4.2 dB 7 ,100 ft 19-gauge PIC 3.0 dB 1 0,000 ft

Maximum Cable Lengths for Various Cable Gauges

Calculations are based on a 70°F cable temperature, 0.083-µF/ mile capacitance, a 27-dB line loss, and a 100-Ω, non-load ed, twisted p air cable; PIC refers to Plastic Insulated Ca ble.

The network physical interface for both the stand- alone unit and the chassis mounted unit is a standard RJ-48C, 8- pin modular jack. A DB-15 backplane is also an option for the network and DTE interfaces. The pinout assignments are shown in Table 2-9.

Network Manage ment

2-11

Network Management

Ta b l e 2 -9

Pin RJ-48 Interface Pin DB-15 Interface

1 Data In 1 Data Out 2 Data In 2 Not Used 3 , 6 Not Used 3 Data In 4 Data Out 4 Not Used 5 Data Out 9 Data Out 7, 8 Chassis Ground 11 Data In

Network RJ-48 and DB-15 Interface Pinouts

Network Disconnection

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

As shown in Figure 2-6, the 2000 CSU provides several means for user interface. Using the configuration switch settings described in this chapter, the CSU may be configured and operated without further interface. However, this mode does not allow access to ma ny of the capabi lities of the CS U.

For full software control and access to information, the CSU has two ports which provide management functions (the supervisory port and the NMS port). These ports may be used for a VT100 terminal interface, EM8000 Network Manager, or 8100A Site Co ntroller inter face.

An element may be accessed by using an RS-232 connection from the serial port of the computer running the EM8000 program or from an 8100A to the element’s SUPV or NMS ports. These ports are described in the following paragraphs.

Supervisory Port

The supervisory (SUPV) port serves several functions. A modem may be connected to this port for remote access or use of the COA (call on alarm) feature. A computer connected to the SUPV port can access the embedded terminal interface firmware for CSU software control (refer to the Terminal Operations chapter).

For cabling convenience, the EM8000 Element Manager may be directly connected to the SUPV port. When a group of elements is connected in an NMS chain, the EM8000 may be connected to the supervisory port of any one of the elements. This element can then route messages on the NMS chain to reach the other elements. Refer to NMS Connection for more information on the EM8000.

The call on alarm (COA) feature is available through the SUPV port only.

The 2000 has two SUPV ports: one in the front and one in the rear. The operation of each port connector is identical, but both ports must not be connected at the same time. The SUPV p ort is an independ ent seri al interface into the CSU and connecting to it does not interrupt NMS port traffic.

2-12 INSTALLATION

Power/

Alarm

NMS

IN/OUT

NMS OUT

Network Interface

SUPV

DTE

Interface

External

Clock

(not used)

The supervis ory port bit rat e must be set as described in Supervisory Port Bit Rate on page 2 - 7 (Switch S4 - 5 and S4 - 6). The physical connection is a 6- pin modular connector with the pinout shown in Table 2-10. This is a serial RS-232 DCE port configured for 8 bits, no parity, and 1 stop bit.

DB-15

(optional)

Table 2-10

SUPV Port Interface Pinout

Pin SUPV Port Interface

1 Not Used 2 Signal Ground 3 Data Out 4 Data In 5 Signal Ground 6 Not Used

DB-15

(optional)

NMS

Connection

Figure 2-6

2000 Rear Panel

The 2000 CSU is fully compatible with the TxPORT EM8000 Element Manager and the 8100A Site Controller. The EM8000 software system and the 8100A Site Controller are used to manage small to large networks of TxPORT network access products. The different connection methods are described in the following paragraphs.

NMS IN/OUT

The two 6- pin modular connectors labeled NMS IN and NMS OUT on the rear panel may be used for connection to the EM8000 or 8100A. This port is configured in this manner to allow the connection of multiple collocated units in a daisy chain IN/ OUT bus arrangement as shown in Figure 2-7.

The OUT port of one element is connected to the IN port of the next element, and so on, to form a complete chain among the group of elements.

Network Manage ment

All units on the same NMS chain must use the same NMS bit rate whether in a chassis or stand- alone housing.

2-13

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 (explained in the Terminal Operation chapter).

EM8000 or 8100A

Element

Last Element

Figure 2-7

NMS

NMS Daisy - Chain Arrangement

OUT IN / OUTNMS

IN OUT

NMS Split Cable

The EM8000 or 8100A may be connected directly into the NMS chain between two elements. The EM8000 may also be connected to the SUPV port if the NMS connection is not desirable. A Y cable is used from the EM8000 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 Optional Equipment on page 1 - 7.

The NMS address, port bit rate, and power up configuration mode may be set by either the configuration switches or through software control. The NMS bus physical connection is a 6 -pin modular connector with the following pinout shown in Table 2-11. This port is a serial RS-232 DCE port configured for 8 bits, no parity, and 1 stop bit.

Table 2-11

Pin NMS Bus IN NMS Bus OUT

1 Not Used Not Used 2 Signal Ground Signal Ground 3 Data Out Data Out 4 Data In Not Used 5 Signal Ground Signal Ground 6 Not Used Not Used

NMS Bus Pinouts

2-14 INSTALLATION

Management

Alarm Connection

Chassis

Network

larm Relay

Figure 2-8

NO NC

Alarm Relay Jumper

The operation of the EM8000 and the 8100A unit in the 12 - slot chassis is similar to the stand- alone operation. Within the chassis, each element is physically connected to the next element in a daisy-chain fashion. Signals from all modules are gathered and presented on consolidated 6 - pin modular connectors on the rear panel, labeled NMS IN and NMS OUT. The front panel SUPV port operates in the same fashion as in the stand- alone uni t.

When used in the chassis, the communications bus is automatically tied into each unit, allowing single point interfacing to the chassis. Cards may be inserted and removed from the chassis without rewiring the communications bus. Communications are restored by shorting contacts on the backplane when a slot is vacant.

The stand-alone unit and the chassis modular unit provide rear panel alarm relay contacts. These dry (isolated) alarm contacts permit connection to a remote indicating device.

Stand - alone

Unit

The connection for the stand - alone unit is made on pins 5 and 6 of the Power/Alarm connector as shown in Table 2-12.

Table 2-12

Pin Function

1 48 VDC return 2 Signal Grou nd 3 - 48 VDC 4 Frame Ground 5 Alarm Contact 6 Alarm Common

Power /Alarm Connection

Pin 5 is configured to operate in either a normally open (NO) or normally closed (NC) mode as dete rmined by the setti ng of the alarm re lay jumper shown in Figure 2-8. This jumper is located on the c ircuit board.

NO and NC refer to the contact’s relationship to the common contact under a no alarms condition. Move the jumper to NC for normally closed operation (opens on alarm) or to NO for normally open operation (closes on alarm). Make connections to the contacts using 20 -gauge stranded wire (or similar). Contacts are rated at 0.3 amperes AC or 1.0 ampere DC.

Internal Audible Alarm

The CSU is equipped with a piezo buzzer that indicates an alarm condition. This feature is particularly useful for sites where the unit is used in a stand- alone application and is not supported by a management system. A simple continuous

Power Connection

beeping from the unit draws attention that T1 service is compromised. This alarm is enabled by Sw itch S4 -2 (r efer to Audi ble Alarm on pag e 2 - 5).

2-15

Assembly

Power Connection

Chassis

Alarm conditions from all modules in the chassis are bused together in parallel and are presented on a single set of alarm relay contacts which permit connection to a remote indicating device. When connected, pins 3 and 4 on terminal strip TB1 operate in a normally open mode. Refer to the 1051 - 2 Chassis Configuration Guide for mo re informat ion.

All modules in a common chassis must use the normally open contact mode.

Make connections to the alarm contacts using 20 - gauge stranded wire (or similar). The contacts are rated at 120 mA AC or 120 mA DC.

External Major Ala rm Rel ay

The CSU allows normally open (NO) or normally closed (NC) alarm relay contacts. Using normally open contacts, a nest of CSUs and any other equipment may use a common bused alarm line that is pulled high or low. Using a normally closed contact set allows a serial daisy chain from unit to unit. A unit going into alarm breaks the alarm loop. This physical indication provides an alternate reporting method to the telco. It is useful when the telco is not using a management system or the link to the management system is not functional.

The stand-alone unit and the modular chassis unit require a -48 VDC power source that is capable of supplying 90-mA current. Power supplies are available from TxPORT and are listed in Optional Equipment on page 1- 7.

Stand - alone

Unit

Connect the ground lead before applying power to the unit.

The power source is connected to pins 1 and 3 of the Power and Alarm terminal as shown in Table 2-12.

Connect a chassis ground lead (18- to 20 - gauge is recommended) to the Frame Ground terminal (pin 4). Connect the other end of this lead to an appropriate facility ground. Often, the 48 VDC return is also ground. In that case, both return and ground leads should be connected to ground. Connect the -48 VDC lead to the

- 48 VDC terminal (18 - to 20 -gauge recommended). Connect the return lead to the 48 VDC return terminal.

When power is applied to the unit, the front panel indicators flash for approximately 10 seconds as the unit executes a self-test function. If an ambiguous configuration has been programmed, the front panel indicators continue to flash after the self - test is completed. If the unit is correctly configured, the green STATUS indicator on the front panel should light.

2-16 INSTALLATION

Chassis

Assembly

When operating the 2000 CSU in the 12-slot chassis, all units are powered by -48 VDC sources which are connected to the 6 -position terminal strip TB2 on the rear of the chassis. The chassis is designed with two power buses. The A bus feeds the odd slots (1, 3, 5, 7, 9, and 11). The B bus feeds the even slots (2, 4, 6, 8, 10, and 12).

Connect a ground lead (18 - to 20-gauge) to the terminal marked Frame Ground on TB2, pin 2. Connect the other end of this lead to an appropriate facility ground.

The following three modes of powering the chassis are available.

Redundant Power Source

The chassis is shipped with a redundant power board installed on power connector TB2. This board allows the connection of two independent -48 VDC supplies operated in a redundant mode. All slots in the chassis are powered from the combined input of the A and B power supplies. If either supply fails, the other powers the entire chassis.

To operate in the redundant power mode, connect the A bus -48 V IN (A) and +48 V RTN (A) terminals on the redundant power board to the corresponding terminals of power supply A. Connect the B bus - 48 V IN (B) and + 48 V RTN (B) terminals to the corresponding terminals of power supply B.

Single Power Source

When using a single power source, simply connect the A bus - 48 V IN (A) and

+ 48 V RTN (A) terminals on the redundant power board to the corresponding terminals of power supply A. This is essentially the same as the redundant configuration with power supply B not operational.

If not using the redundant power board, the A bus and the B bus must be connected together on the rear of the chassis with a jumper (pin 3 to pin 4 and pin 1 to pin 6).

Dual Power Source

When using a dual independent power supply, one - 48 VDC source feeds the A bus while anothe r - 48 VDC so urce feeds th e B bus. First, remove the re dundant power board. Connect the A bus 48 V Return and - 48 VDC terminals to the corresponding terminals of power supply A (to power the odd-numbered slots). Connect the B bus 48 V Return and -48 VDC terminals to the corresponding terminals of power supply B (to power the even-numbered slots).

Each CSU requires a 90-mA current. Ensure that the proper fuse size is used. Refer to the 1040 Power Shelf configuration guide.

Power Connection

Unit 1 Unit 2 Unit 3 Unit 4 Unit 5 Unit 6 Unit 7 Unit 8 Unit 9 Unit 10 Unit 11 Unit 12

2-17

Figure 2-9

( B )

NMS

DTE

High

Speed

DTE

NET

TB1 - 23451

DTE

High

Speed

DTE

NET

Model 1051-2, Front View

( B ) NMS OUT

DTE

High

Speed

DTE

NET

Redundant

Power Board

DTE

High

Speed

DTE

NET

TB2 - 23456

Line Chassis Mounting Hardware

Rack and19" or 23" Multiple

( A )

NMS

DTE

High

Speed

DTE

NET

DTE

High

Speed

DTE

NET

1 - EXT CLK 2 - EXT CLK 3 - ALARM RING

DTE

High

Speed

DTE

NET

TB1

4 - ALARM TIP 5 - SIG GND

DTE

High

Speed

DTE

NET

DTE

High

Speed

DTE

NET

1 - + 48 V RTN (B) 2 - FRAME GND 3 - -48V IN (B)

DTE

High

Speed

DTE

NET

TB2

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

DTE

High

Speed

DTE

NET

( A ) NMS OUT

DTE

High

Speed

DTE

NET

ENET

Figure 2-10

Model 1051-2, Rear View

2-18 INSTALLATION

PERATION

Introduction

Front Panel Descriptions

General

Status

Indicators

This chapter contains the general operation instructions for the TxPORT 2000 front panel. The unit is operated either manually or through software control. Manual operation consists of using the front panel and the circuit board configuration switches as de scribed in th e Installati on chapter.

The Terminal Operation chapter covers the firmware controlled Terminal Interface program, which gives the user the maximum amount of control. The unit may also be controlled using the TxPORT 8100A Site Controller or the EM8000 Element Manager (refer to the 8100A or EM8000 reference manual).

The 2000 CSU uses LED indicators to convey major alarm conditions and looping status. The front panel contains 20 LED indicators, two test switches, a set of bantam test jacks, and a supervisory port connector. The following paragraphs describe these controls and indicators and are referenced to Figure 3-1.

STATUS: The CSU has two LED indicators on the front panel bezel that are

exposed whether the access door is open or closed. These general status LEDs provide a quick check of the CSU’s operating condition (Go or No Go).

If neither LED is on, the unit is not powered. If the green LED is on, the unit is powered and functioning normally. If the red LED is on, there is a line fault that exceeds alarm thresholds or another type of unit failure. The problem can be isolated by further examination of the other front panel LEDs as described in the following paragraphs. NMS alarms are displayed by the two LEDs alternately turning red and green about every half second which occurs when the unit is managed by an 8100A that detects a duplicate address or invalid address (0 to 63 are valid). The 8100A detects these error conditions and notifies the unit to enter an NMS-alarm condition. Once the error condition has cleared, (either the duplicate address is removed or an invalid address is corrected) the 8100A notifies the unit to clear the NMS-alarm condition.

Activity Indicators: These two small, recessed LEDs indicate supervisory and

network manager port activity.

3-2 OPERATION

Alarm Controls

and Indicators

3 ACO: This yellow LED lights whenever the alarm

cut off switch is placed in the left ON position. It indicates that the alarm relay contacts are disabled.

4 ACO SW: The alarm cut off switch controls the

alarm relay circuitry. If the switch is placed in the left ON po sition, thi s circuit ry is deac tivated. The right OFF position enables the contacts to report alarm conditions.

5 BV/ CR/ FE: This LED lights one second for each

second with an occurrence of bipolar violations (BPV), cyclic redundancy check (CRC) errors, or frame bit errors (FBE).

6 LOS/ OOF: This LED blinks with loss of signal

(LOS) from the network or DTE. It lights constantly when an out of frame (OOF) condition is detected.

7 AIS: This alarm indication signal LED lights if an

unframed all ones condition is detected from the network or DTE.

8 R EM ALM: This L ED lights con stantly when a

remote (yellow) a larm signal is received.

9 LOC ALM: This LED lights when a local alarm

exceeding alarm thresholds exists.

10 DENSITY: This LED lights when a low ones

density is re ceived from the equip ment.

1 3

5 6 7 8 9

10 11

12 13

14 15

TRANSPORT

ESF CSU

BV/CR/FE

LOS/OOF

AIS

REM ALM

LOC ALM

FRM NET

DTE

S U P V

2000

ACO SW

N E T

DENSITY

LLB

PLB

TST

ERR

STATUS

ACO

PAT SEL

D T E

T S T

LOCFAR

NET

MONMON

FRM DTE

Test Controls

and Indicators

Figure 3-1

2000 CSU Front Panel

11 LLB: This LED lights continuously when the network interface is in line

loopback. It flashes when the DTE interface is in line loopback.

12 PLB: This LED lights continuously when the network interface is in payload

loopback.

Front Panel Testing

TST: This LED lights continuously during a Far or a Local test. It flashes while

loopback codes are transmitted at the start of a Far test and while unloop codes are transmitted at the end of a Far test.

ERR: This LED lights for one second when BERT pattern errors are received

during a Far test. Test Switch: This switch (FAR / LOC) is used for local testing. Refer to Test

Switch for more information. Test Access Jacks: These six bantam test jacks are provided for access to the T1

line on the DTE side of the CSU. Refer to Test Access Jacks for more information.

Supervisory Port: The supervisory jack provides direct terminal access to control

the unit and gather status/ facility performance data. Refer to Supervisory Port. Pattern Select: This switch determines the BERT pattern sent by the CSU when

the Test switch (item 15) is in the FAR position. R efer to BERT Pattern Select.

3-3

Front Panel Testing

Test

Switch

Test

Access

Jacks

The previous section gave a brief description of each front panel control and LED indicator. This section explains the front panel test functions. Testing may also be performed using software control from the EM8000 Network Manager, the Terminal In terface progra m, or the 8100A Site Controller.

This switch (lab eled FAR /LOC) is us ed for local testi ng. W hen in the Far posi tion, the unit sends five seconds of IBLC (inband loop codes), then switches to the test pattern sele cted by the Patter n Select rotary switch. Whe n transmitti ng IBLC, the test LED blinks. When transmitting a test pattern, it lights continuously. The ERR

LED lights for one second when a bit error or sync loss is detected.

When the Test switch is retur ned to the

normal

, center position, the unit sends five

seconds of loop down code (100) and then returns to its normal operating mode.

When the Test switch is in the Local position, the unit performs a local loop. The LLB and Test LEDs are lit.

Six bantam test jacks are provided for access to the T1 line on the DTE side of the CSU. Two are used for non-intrusive bridge monitoring of the line in both directions (MON). Two are used to drop the line (DTE) and two are used to insert into the line in both directions (NET). Jacks are customarily used to inject and receive T1 signals using a T1 test set. Figure 3-2 shows the front panel access jacks. Figure 3-3 shows where the jacks connect in the circuit.

Receive signal

from the network

Monitor signal

from the network

Transmit signal

to the DTE

Figure 3-2

Transmit signal

to the network

Monitor signal

from the DTE

Receive signal

from the DTE

Front Panel Access Jacks

3-4 OPERATION

DTE

Protection

DTE Interface

Insert to DTE

Monitor

Insert from NET

CSU Circuitry

Line Drivers /Receivers

Supervisory

Port

BERT

Pat t e r n

Select

Figure 3-3

Insert from

Monitor

DTE

Monitoring, Network, and DTE Jacks in the PRISM 2000

Insert to NET

This 6 - pin modular RS-232 supervisory jack provides direct terminal access for controlling the CSU and gathering status and performance data. The stand- alone unit has an additional rear panel SUPV port. The operation of each port connector is identical, but both supervisory ports must not be connected at the same time.

A terminal may be connected to this port for external software control. A modem may be connected for remote access. This port may also be used to connect the EM8000 Element Manager or 8100A Site Controller into the network.

Rotary Switc h S1 determin es the BERT pattern s ent wh en the Test switch is in the FAR position. Table 3-1 shows the corresponding BERT test pattern sent when the rotary switch is set to positions 0 through 5.

Ta b l e 3 -1

Position 0 1 2 3 4 5 Pattern QRSS 1 :8 3:24 2

Front Panel BERT Pattern Select

-1 220-1 Clear

The Clear pattern passes the received data through the unit (alarm detection and reporting is disabled while the test is active).

ERMINAL

PERATION

Introduction

System Description

This chapter describes the screens and menus associated with the TxPORT 2000 CSU Terminal Interface, which is a firmware application program embedded inside the unit. The interface allows control and monitoring of the unit through a serial terminal, using one or both of the two 6 - pin modular serial ports located on the front and rear panels.

Refer to the Ins tallation cha pter for more inf ormation on user connections . Cables are available for most typical connections. Standard cables and ordering numbers are listed in Table 1-2 on page 1 - 7. Contact TxPORT for any needed assistance in cable selection.

In addition to the 54016 and T1.403 protocols, proprietary messages can be sent over the facility data link (FDL) from the near-end CSU to the far-end CSU. A local RS-232 terminal connected to the CSU may access a far-end CSU. Thus, the remote CSU may be queried for status and statistics, configured, or looped for testing as if the terminal is directly connected to it.

The terminal interface requires an ANSI-compatible VT100 terminal (ASCII), or a computer running an ANSI terminal emulation program. The Terminal Interface utilizes the ASCII break and escape functions, which are implemented differently with the various terminal emulation programs. Consult the documentation supplied with the terminal emulation program for further reference.

The unit has two serial interface RS-232 ports. Either of these ports may be used for the terminal interface program or as a connection to the EM8000 Network Manager or 8100A Site Controller. One port is a pair of daisychain-type rear panel connectors labeled NMS IN/OUT and NMS OUT. The other port is located on the front panel and is labeled SUPV.

The stand-alone unit also has a second supervisory connector on the rear panel wired in parallel with the front panel supervisory port. Serial bit rates of 1200, 2400, 9600, or 19200 kbps may be selected using option switches (see Supervisory Port Bit Rate on page 2 - 7).

Both serial ports support the same custom protocols that allow the terminal interface, the EM8000, or the 8100A to request and receive performance and configuration data from the CSU. The unit automatically determines which protocol is needed.

4-2 TERMINAL OPERATION

Modem

Compatibility

Screen

Components

The 2000 CSU Terminal Interface supports use of an AT command-set-compatible modem on either or both of the NMS IN/OUT and SUPV serial ports. The modem should be optioned to ignore DTR, enable auto answer, inhibit command echo, and return verbose r esult codes.

Calling the 2000 CSU and sending the break command before receiving the connect message, hangs up the modem.

Terminal interface screens have several components common to all screens and are discussed individually in the follow ing paragraphs. These common screen elements are shown on the Password Screen (Figure 4-1).

Device Type and Revision

The device type (2000 CSU) and the revision control numbers are shown in the upper left co rner. The first number is th e hardwa re revision and the seco nd number is the software revision. Information is displayed for the near-end unit (connected directly to the terminal) on the top line, and for th e far-end unit (conne cted to the network T1 interface) on the second line. Refer to this information when contacting the factory with inquiries.

The far-end information is available only for TxPORT products that support a proprietary message set. If the far-end does not support these messages but does support standard 54016 protocol, the far-end information is displayed as GENERIC 54016 FAR END. If the far end does not respond to either proprietary or 54016 messages, then NO FAR END RESPONSE is displayed. If the far end echoes the FDL messages transmitted by the near-end unit, then FAR END LINE LOOP is displayed.

Date /Time

The top right corner of the terminal screen displays the current date and time. The setting of these functions is described in Set Time on page 4 - 20.

Unit Address

Below the unit header (2000 CSU), the current unit address is displayed along with any information entered in the Element ID field of the Utilities screen.

2000 CSU x.xx/x.xx 2000 CSU Date MM/DD/YY 2000 CSU x.xx/x.xx (Unit Address: xxx) Time HH:MM:SS

------------------------------- PASSWORD SCREEN --------------------------------

Enter Password: (**********)

Start Date: MM/DD/YY Start Time: HH:MM:SS

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

Figure 4-1

Password Screen

System Description

4-3

Menu Title

The third line displays the general classification of functions currently accessible by the user (such as Alarms or Performance).

Messages

This line may display the following messages:

NMS ALARM.

An error condition displayed when the unit is managed by an 8100A that detects a duplicate address or invalid address (0 to 63 are valid). The 8100A detects these error conditions and notifies the unit to enter into an NMS ALARM condition. Once the error condition has cleared, (either the duplicate address is removed or the invalid address is corrected) the 8100A notifies the unit to clear the NMS ALARM condition, While in the NMS ALARM condition, the unit’s Status LEDs turn from red to green and back about every half second.

NET ALARM.

An error condition has exceeded the specified alarm threshold on the

network interface .

DTE ALARM.

An error condition has exceeded the specified alarm threshold on the

DTE interface .

NET LOOP.

DTE LOOP.

TEST ACTIVE.

A payload or line loopback is active on the network interface. A payload or line loopback is active on the DTE interface.

BERT has been activated by the terminal interface, the EM8000, or the 8100A system. While this is being displayed, alarm detection and reporting is inhibited.

FAR END ALARM.

The far end has an alarm condition (detectable only with

TxPORT-prop rietary devices ).

Interface

Start Up

FAR END LOOP.

FAR END TEST ACTIVE.

A payload or line loopback is active at the far-end device.

The far-end device has a test active (this is detectable only

with TxPORT-proprietary devices).

Once a compatible terminal is properly connected to the CSU, a terminal interface session is started by sending a break command to the unit. If the NMS port is used, the unit then responds with the prompt Enter Unit Address. To activate the first (or only) unit, simply press Enter. To select a specific unit, enter the address number of the desired unit and press Enter.

The Enter Unit Address prompt times out after 10 seconds. If this happens, send another brea k command. To select another unit, exit the current te rminal interface , send a break command, and repeat the process.

If an invalid address is entered, that address is echoed to the terminal. Send a break command to start a new session.

4-4 TERMINAL OPERATION

The Main Menu screen (Figure 4-3) is displayed if no password has been specified in the Utilitie s menu. Refer to New Passwor d on page 4 -20 for inform ation on setting the p assword. In th e Password screen (Figure 4-1), enter th e correct password to obtain access to any other menu.

Daisy - Chain

Menu Operation

Multiple units may be connected to a single terminal by using the NMS daisy - chain bus. This terminal can access the embedded-firmware interface software within any unit without having to move the connecting cables. The terminal must be connected to th e first unit’s NMS interface in a dai sy-chain fashion using a split cable (refer to the ordering information in Table 1-2 on page 1-7).

Each unit must then be connected to the next unit’s NMS port in a daisy chain-fashion (as required for the EM8000 manager). The last unit is then connected to the other end of the split cable as shown in Figure 4-2.

The firmware revision number of all units that are supported in the NMS daisy chain must be as follows: 2000 CSU Revision 2.09 or later 2048 PMU Revision 2.29 or later

Split

Cable

Unit # 1

IN / OUT OUTNMS

Cursor

Controls

Unit # 2

Last Unit

Figure 4-2

Daisy - Chain Arrangement

IN / OUT OUTNMS

The terminal interface utilizes a highlighted cursor to make selections from menus and to select fields within screens. The cursor can be moved using the standard keyboard arrow keys (left, right, up, and dow n). Once a field is highlighted, it is manipulated as described in Field Types.

For keyboards that do not have these standard keys or have only some of them, an alternate set of cursor control commands is provided. Each of these is performed by pressing a letter key while holding down the Control key. Alternate commands

System Description

4-5

may be freely mixed with the keyboard commands at the user’s discretion. The alternate co mmand keys are li sted in Table 4-1.

Field

Types

Ta b l e 4 -1

Keyboard Command Alternate Command

left arrow Control +S right arrow Control +D up arrow Control +E down arrow Control +X backspace Control+ H delete Control + Z

Keyboard and Alternate Commands

Each screen is made up of fields. The two basic 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 are for disp lay only. User-selectabl e fields allow for changes to be made or commands to be executed.

Fields without brackets or parenthesis are display-only fields. They cannot be changed on the screen. Most user-selectable fields are enclosed in brackets or parenthesis and are described in the following paragraphs. Any exceptions are noted in the appropriate section of this manual.

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:

Pressing Enter on such fields as (Reset) and (Start Test) simply execute the

✦

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 re place it, pr ess the right arrow key to move the cursor to th e 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 range ch ecked, where exit ing with illegal value s is not allowed.

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.

4-6 TERMINAL OPERATION

Main Menu Screen

The Main Menu screen (Figure 4-3) lists the user-accessible functional menus. To activate any menu, highlight the desired selection and press Enter. This menu and any subsequent menu may be exited by pressing Escape. If the Main Menu is exited, the terminal interface program terminates. This is a valid way to end a user session. If any other menu is exited, the program returns to the previous screen.

The menu structure (Figure 4-4) shows all the screens accessible from the Main Menu.

Log

MAIN

Log

Off

Alarms

Performance

Maintenance

Configuration

Utilities

Standard 24-Hour

Enhanced 24-Hour

Standard 30-Day

Enhanced 30-Day

Line Parameters

Alarm Parameters

Figure 4-4

If the keyboard is inactive for 10 minutes, the terminal interface logs off automatically. To manually log off, press the Escape key from the Main Menu.

2000 CSU x.xx/x.xx 2000 CSU Date MM/DD/YY 2000 CSU x.xx/x.xx (Unit Address: xxx) Time HH:MM:SS

------------------------------------ MAIN --------------------------------------

Menu Structure

Alarms Performance Maintenance Configuration Utilities

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

Figure 4-3

Main Menu Screen

Alarms Screen

4-7

Alarms Screen

The Alarms screen (Figure 4-5) is used to view the current alarm status of the network and DTE lines. The fields are described as follows.

Element The NEAR unit or FAR unit selection is toggled by pressing the spacebar.

NET/ DTE

Alarms

These status lines display the selected element’s current network/DTE signal alarm state. Alarms are determined by the following user-selectable thresholds.

Ta b l e 4 -2

Alarm Description

------- No status is available. None No alarm threshold has been exceeded, althou gh

ERRS Errored Seconds, Severely Errored Seconds, or

LOSS Loss Of Signal Seconds threshold is exceeded. OOFS Out Of Frame Seconds threshold is exceeded. RAIS Remote Alarm Seconds threshold is exceeded. AISS Alarm Indication Seconds threshold is exceeded. UAS Unavailable Seconds threshold is exceeded.

Alarm Indications

errors may exist which do not exceed thresholds.

Bipolar Errored Seconds threshold is exceeded.

alarm status The main bo dy of the Alar ms screen di splays the c urrent cou nt for parame ters that

may be used to trigger an alarm.

The Current column shows the total of the preceding 15 one- minute intervals. At the end of each one-minute interval, the oldest minute of the 15-minute interval is discarded.

The Threshold column shows the values set in the Alarm Configuration screen (see Alarm Configuration on page 4-18). Any parameter that has a current value equal

2000 CSU x.xx/x.xx 2000 CSU Date MM/DD/YY 2000 CSU x.xx/x.xx (Unit Address: xxx) Time HH:MM:SS

----------------------------------- ALARMS ------------------------------------Element: [NEAR]

NET Alarms: NONE DTE Alarms: NONE

Loss Of Signal Seconds (LOSS): 0 5 Errored Seconds (ES): 2 45 Severely Errored Seconds (SES): 2 5 Unavailable Seconds (UAS): 0 0 Out Of Frame Seconds (OOFS): 0 0 Remote Alarm Seconds (RAS): 0 0 AIS Seconds (AISS): 0 0 BPV Seconds (BPVS): 0 0 DTE LOS/OOF Seconds (LOSS/OOFS): 0 5 Power Loss Seconds (PLS): 0

Reset Alarm Registers: (RESET)

Current Threshold

Figure 4-5

Alarms Screen

4-8 TERMINAL OPERATION

to or greater than its non-zero threshold ge nerates an alar m. Any parameter with a threshold value of 0 is disabled from generating alarms.

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

Power Loss

Seconds

Reset Alarm

Registers

Performance Screens

This field displays the number of seconds that the CSU has been without power since this value was last cleared.

Pressing Enter on RESET zeros the value of all Current alarm parameters, but does not affect 24 - hour or 30 - day performance registers.

The Performance screens display a detailed history of the continuously monitored error parameters. The terminal interface provides display of near-end or far-end performance data using the facility data link.

The unit is equipped with a dual set of performance data registers that hold line statistics for both the telco and user. Each register set provides detailed status and performance history for the network and DTE interfaces. The user register offers individual resets.

The system has four Performance screens. The STANDARD 24 HOUR and the ENHANCED 24 HOUR screens allow viewing the 24 - hour detailed performance history of th e T1 circuit. T he only difference in the two scree ns is in the type of performance data displayed. The STANDARD 24 HOUR screen is shown in Figure 4-6.

The STANDARD 30 DAY and the ENHANCED 30 DAY screens allow viewing a 30 - day history of a particular element’s performance. These screens reference intervals by date ra ther than by time. To reach each of th e four scree n types, use the spacebar to toggle the STANDARD 24 HOUR field. The other fields are described as follows.

2000 CSU x.xx/x.xx 2000 CSU Date MM/DD/YY 2000 CSU x.xx/x.xx (Unit Address: xxx) Time HH:MM:SS

--------------------------------- PERFORMANCE ----------------------------------

Element: [NEAR] Status: OK Target: [USER][NET] Completed Days: 30 Error Events: 65535 (RESET) Completed Intervals: 96 (RESET PERFORMANCE REGS) 24 Hr.% Error Free: 98.2

[STANDARD 24 HOUR]

411 0 0 0 2 3 3 24 Hour 10 0 0 2 3 0 30 Day 30 10 20 12 2 13

PAGE-UP -------------------------------------------------------------------

PAGE-DN -------------------------------------------------------------------

Time Interval ES UAS BES SES LOFC CSS

13:45 6 1 0 0 0 1 0 13:30 7 2 0 0 0 2 0 13:15 8 4 0 0 0 2 0

Figure 4-6

Performance Screens

4-9

Element Pressing the spacebar toggles this field for selection of either the NEAR or FAR

unit as the source of performance data or the target of commands. NEAR refers to the unit to which the terminal is connected. FAR refers to the unit at the other end of the network T1 span.

Target This two- part field determines which section of the circuit is presently displayed.

Pressing the spacebar toggles the following options:

USER NET

Display the user-performance registers for the network.

USER DTE

Display the user-performance registers for the T1 DTE.

TELCO NET

Display the telco-performance registers for the network.

TELCO DTE

Display the telco-performance registers for the T1 DTE.

Error

Events

Reset

Performance

Registers

This field displays the running total of ESF error events for the circuit selected in Element and is applicable only when Target is set to USER. This count accumulates until it reaches 65535 or is reset by pressing Enter with the RESET field highlighted.

This field allows the element registers to be reset and may only be used when Target is set to USER. If Enter is pressed, the following warning appears:

DELETE ALL PERFORMANCE DATA?

(NO!) (YES)

To exit this screen without perfor ming the rese t function, pres s Enter with NO selected. To proceed with the reset function, press Enter on YES. All values for the chosen regist er set NET or DTE are then rese t to zero.

Standard 24 Hour

Toggling this field with the spacebar steps through the four available performance screens.

The remainder of the fields in the Performance screen are for display only. They are defined as follows.

Status

This field displays the selected T1 line status derived from the type (or absence) of errors in the received data. The status represents the immediate state of the received T1 signal and is not related to the alarm thresholds. This field shows one or more of the signal conditions listed in Table 4-3 on page 4 -14.

4-10 TERMINAL OPERATION

Completed Days

This field displays the number of days which are included in the 30 -day totals.

Completed Intervals

This field displays the number of 15 - minute intervals in the last 24-hour period since the registers were last cleared (a 24- hour period may contain up to 96 intervals).

24 Hr. % Error Free

This field displays the percentage of error-free seconds within the last 24 hours or since the event registers were last cleared. It is based only on the ES and UAS parameters.

performance data

The main body of display data consists of error events for three different periods: The first displa y line shows the d ata accumu lating for th e current in terval (from 0 to 900 seconds). The second line shows the totals for the last 24- hour period (or the last 96 fifteen- minute intervals). The third line shows the 30- day totals.

The remaining lines of this screen show the data for any of the intervals that contained er rors. Interval 1 is the mo st recently sto red interval and inte rval 96 is the oldest 24- hour interval. Interval 30 is the oldest 30-day interval (on the 30 - day screen). The real time (or da te on the 30 - day screen) of the interval beginning is shown in the first column.

If more than five errored intervals have elapsed, PAGE - DN appears to the left of the performance data. Pressing Enter on this field displays the next five errored intervals. PAGE-UP appears once PAGE -DN is used. Pressing Enter on PAGE-UP displays the previous five errored intervals. Only intervals that contained errors are displayed, which eliminates rows of zeroes. If an interval is not displayed, no errors were detected during that time period.

The parameters shown on the Performance screens are updated at five-second intervals.

Per AT&T Technical Reference TR54016, the Standard 24 Hour and Standard 30 Day performance data consists of Errored Seconds (ES), Bursty Errored Seconds (BES), Severely Errored Seconds (SES), Unavailable Seconds (UAS), Loss of Frame Count (LOFC), and Controlled Slip Seconds (CSS).

The Enhanced 24 Hour and Enhanced 30 Day screens show data for CRC Errored Seconds (CRCES), Out of Frame Seconds (OOFS), Loss of Signal Seconds (LOSS), Alarm Indication Signal Seconds (AISS), Remote Alarm Seconds (RAS), and Bipolar Violation Seconds (BPVS).

For generic 54016 far-end devices, only the standard telco 24- hour performance data is displayed. 30- day data is not available.

Maintenance Screen

4-11

Maintenance Screen

Test

Loops

The Maintenance screen (Figure 4-7) allows performing test and maintenance functions on the T1 circuit. BERT is performed using on - board test facilities. Therefore, no other test equipment is needed. Actions initiated by each field are detailed in the following paragraphs.

Clear Tests

Pressing Enter on this field clears all tests and any loops that have been initiated.

Clear Alarms

Pressing Enter on this field clears all near-end alarms.

Loop status changes can be made only when the BERT function is not in the active mode. The line may be taken out of service by inducing loops at each end. The CSU recognizes in-band and FDL out - of - band loopback requests as well as local or remote network manager loopback configurations. The unit supports a multitude of ways to test the service to and from the CSU. The CSU has loopback and BERT functions as described in the following paragraphs.

The CSU monitors network loopback commands and activates loops based upon their reception as described in TR54016 and T1.403. Loops may be activated through the terminal interface via the supervisory port or through the network manager. A loop may also be activated by the front panel test switch. The normal operating mode of the CSU in a non-loop condition is shown in Figure 4-8.

NET

Interface

Figure 4-8

2000 CSU x.xx/x.xx 2000 CSU Date MM/DD/YY 2000 CSU x.xx/x.xx (Unit Address: xxx) Time HH:MM:SS

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

(CLEAR TESTS) Pattern: [QRSS] (CLEAR ALARMS Test Length: [15 min]

T1 Loop: [NET LLB][AIS ] Pattern Sync: IN SYNC T1 Unloop: [DTE PLB] Elapsed Time: 01:15:00

Far LLB: [Unframed] Bit Errors: 5

NET Status: OK (RESET ERRORS) DTE Status: OK Near Loops: -------/-------/-------/------Far Loops: -------/-------

Framing, CRC, FDL

Normal Operation

DTE

Interface

Errored Seconds: 3 % EFS: 97.5

(START TEST)

Figure 4-7

Maintenance Screen

4-12 TERMINAL OPERATION

T1 Loop

This field is used to select the test loops to be initiated. The type of loop is chosen by toggling the spacebar and is executed by pressing Enter. The near-end loops require that a Keep Alive signal be selected. There are five available loopback options. The following paragraphs and diagrams give detailed descriptions. The symbol represents an ignored signal.

NET LLB. The NET LLB loop returns network RXD to TXD with signal

regeneration only. Toward the DTE side, the CSU may be optioned to send AIS on DTE TXD or LOOP back DTE RXD to TXD as shown in Figure 4-9.

NET

Interface

Framing, CRC, FDL

AIS

DTE

Interface

NET LLB, AIS to DTE

DTE

Interface

NET

Interface

Framing, CRC, FDL

NET LLB, LLB on DTE

Figure 4-9

DTE LLB. The DTE LLB loop (Figure 4-10) returns DTE RXD to TXD with

Network Line Loopbacks

signal regeneration only. Toward the network side, the CSU may be optioned to send AIS on network TXD or LOOP back network RXD to TXD.

DTE

Interface

NET

Interface

Framing, CRC, FDL

AIS

DTE LLB, AIS to NET

DTE

Interface

NET

Interface

Framing, CRC, FDL

DTE LLB, PLB on NET

Figure 4-10

FAR PLB. Executes a network payload loopback at the far-end CSU. The unit in

DTE Line Loopback

loop sends AIS to the DTE.

FAR LLB. Executes a network line loopback at the far-end CSU. The unit in loop

sends AIS to the DTE.

Maintenance Screen

4-13

NET PLB.

The NET PLB loop (Figure 4-11) returns network RXD to TXD with

new framing, CRC, and FDL bits. Toward the DTE side, the CSU may be optioned to send AIS on DTE TXD or LOOP back DTE RXD to TXD.

AIS

DTE

Interface

DTE

Interface

NET

Interface

NET

Interface

Figure 4-11

Framing, CRC, FDL

NETPLB,AIStoDTE

Framing, CRC, FDL

NET PLB, LLB on DTE

Network Payload Loopback

T1 Unloop

Pressing Enter takes down the specified loop from the currently selected element.

Far LLB

This field allows selecting how the in-band line loopback code is transmitted when a far test is activated from the FAR/LOC front panel switch. Options are Framed and Unframed per ANSI T1.403.

Setting this field does not activate the loop code transmission.

BERT Pattern

Specifies the pattern transmitted during a test. Modifying this field does not the pattern to be transmitted (refer to Start Test). A BERT may also be activated using the front panel switch. The CLEAR pattern passes the received data through the unit (alarm detection and reporting is disabled while the test is active). The choices are QRSS, 63, 511, 2047, 2

Test Length

Defines the run time of test pat tern generati on and error accu mulation. The choices are Continuous, 15 min, 30 min, 60 min, and 24 Hour.

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.

Reset Errors

Pressing Enter with the cursor on this field clears the test error results.

, 220, 223, 1:8, 3:24, ALT, and CLEAR.

cause

The following field s are for display o nly. They reflect the selected t est parame ters and the results of these tests only.

4-14 TERMINAL OPERATION

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.

Elapsed 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 a maximum number of 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 errored seconds and sync loss seconds.

% EFS

Line Fault

and

Loop Status

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

NET / DTE Status

These two fields display the fault status of the network and the DTE. They are indicators of current fault conditions. They do not indicate that alarm thresholds have been exceeded. These status indications are described in Table 4-3.

Ta b l e 4 -3

Status Description

------- No status is available. OK No errors are currently detected. ERR Frame bit errors, CRC errors, or bipolar violations are detected. LOS A loss of signal condition exists. OOF An out of frame condition exists. RAI A remote alarm ind ication signal is being received from the far end. AIS An alarm indicatio n signal is being received from the far end. UAS An unavailable signal state exists due to consecutive severely errored seconds.

Status Indications

Near Loops

Displays the loop status of the near element.

Far Loops

Displays the loop status o f the far element .

Configuration Screens

4-15

Configuration Screens

Configuration

Line

The two Configuration screens allow viewing and setting the configuration parameters for the network elements. When Configuration is selected from the Main Menu, the Line Configuration screen appears. The Alarm Configuration screen is accessed by pressing Enter on (GO TO ALARM THRESHOLDS). To send a new configuration to the unit, press Enter on one of the fields or exit the screen.

A circuit may be configured either before or after the hardware is installed using the option sw itches or the Terminal Interface. If the unit is to reta in the configuration parameters selected through the Terminal Interface on power-up, set the option switches to boot from RAM. Once a CSU is active, its configuration may be changed by this program regardless of the switch settings.

The underlined values are the factory default parameters stored in ROM.

The Line Configuration screen (Figure 4-12) allows viewing and setting configuration parameters for the CSUs on the T1 circuit. This screen has the following fields, all of which have user-selectable options. To send the new line configuration to the unit, either press Enter on one of the fields, change the Element selection, or exit the screen.

NET Framing

Selects the type of framing for the network side of the CSU. The choices are ESF and D4.

NET Line Code

Sets the network side line coding. The choices are AMI and B8ZS

NET Keep Alive

Selects the action to take place when there is a loss of frame or signal on the DTE as shown in Figure 4-13. The choices are as follows.

2000 CSU x.xx/x.xx 2000 CSU Date MM/DD/YY 2000 CSU x.xx/x.xx (Unit Address: xxx) Time HH:MM:SS

----------------------------- LINE CONFIGURATION -------------------------------

Element: [NEAR]

NET Framing: [ESF ] DTE Framing: [ESF ] NET Linecode: [B8ZS] DTE Linecode: [AMI ] NET Keep Alive: [FRAMED ONES] DTE Keep Alive: [FRAMED ONES] NET->DTE CRC: [REGEN] DTE->NET CRC: [REGEN] NET LBO: [-22.5 dB] DTE DSX Level: [0-110 ft ]

PRM Generation: [DISABLED] FDL Pass Through: [TERMINATE] Zero Suppression: [DISABLED] Audible Alarm: [ENABLED ]

(GO TO ALARM THRESHOLDS)

Figure 4-12

Line Configuration

4-16 TERMINAL OPERATION

AIS. Transmit unframed all ones toward the NET. ONES. Transmit framed all ones toward the NET. LOOP. Activate a payload loopback on the NET interface.

The symbol represents a line fault.

DTE

Interface

NET

Interface

Framing, CRC, FDL

AIS

DTE LOF, AIS to NET

DTE

Interface

NET

Interface

Framing, CRC, FDL

F1s

DTE LOF, Framed Ones to NET

NET

Interface

Framing, CRC, FDL

F1s

DTE

Interface

DTE LOF, PLB on NET

Figure 4-13

Network Keep Alive Descriptions

NET->DTE CRC

Determines whether received CRC data from the network is passed to the DTE or if a new CRC is generated. The choices are PASS and REGEN

NET LBO

Sets the line build out for the network interface. The choices are 0

dB,-7.5

dB, -15 dB, and -22.5 dB.

PRM Generation

Turns the T1.403 Performance Report Message, which is sent once a second, on or off. The choices are ENABLED and DISABLED

Zero Suppression

This field determines whether ones-density insertion is activated after 15 zeros (rather than 175 zeros). T he choices a re ENABLED

If the QRSS pattern is detected on the DTE receiver, the NET transmitter zero suppression is DISABLED regardless of this option setting.

and DISABLED.

DTE Framing

Selects the type of framing for the equipment side of the CSU. The unit permits framing conversion from the DTE to the network and from the network to the DTE

Configuration Screens

4-17

(D4 to ESF and ESF to D4). Older D4 equipment can be supported with newer ESF spans. ESF framing allows the user and telco access to the increased serviceability and information available through the FDL protocols. The choices are ESF

and D4.

DTE Line Code

Selects the line coding for the DTE side of the CSU. The choices are AMI and

B8ZS

DTE Keep Alive

Selects the action to take place when there is a loss of frame or signal on the network as shown in Figure 4-14. The choices are as follows.

Transmit unframed all ones toward the DTE.

AIS.

ONES.

LOOP.

Figure 4-14

Transmit framed all ones toward the DTE.

Activate a payload loopback on the DTE interface.

NET

Interface

NET

Interface

NET LOF, Framed Ones to DTE

NET

Interface

DTE Keep Alive Descriptions

DTE -> NET CRC

Framing, CRC, FDL

AIS

NET LOF, AIS to DTE

Framing, CRC, FDL

F1s

Framing, CRC, FDL

F1s NET LOF, LLB on DTE

DTE

Interface

DTE

Interface

DTE

Interface

This field determines whether received CRC data from the DTE passes to the network or if a new CRC is generated. The choices are PASS and REGEN

DTE DSX Level

Specifies the line build out for the DTE output of the unit. The choices are 0 -110 ft

, 111- 220 ft, 221-330 ft, 331-440ft, 441-550ft, 551-660ft, and >660 ft.

FDL Pass Through

This field determines whether the ESF FDL passes through the CSU or terminates. The choices are PASS

and TERMINATE.

4-18 TERMINAL OPERATION

Audible Alarm

Alarm

Configuration

This field Enables and Disables

the CSU’s internal buzzer which alerts users of an

alarm condition.

The Alarm Configuration screen (Figure 4-15) allows reviewing and setting alarmrelated thresholds (minimum acceptable performance levels) for the unit. Alarm conditions may be reported by alarm relay contacts and/or by an audible alarm. If an error condition exceeds the preset alarm thresholds, the red Status LED on top of the front panel, the LOC ALM LED, and the alarm relay are activated.

If the Alarm Reset Timer period elapses with no further errors detected, the alarm relay and both LEDs clear. If the ACO (Alarm Cut Off) switch is activated while an alarm condition exists, the Status LED and alarm relay clear. The LOC ALM LED remains lit until the Alarm Reset Timer period elapses.

To modify the default 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 CSU not to alarm on that statistic. Re fer to the Inst allation cha pter for more in formation o n manually set ting alarm configurations.

Errored Seconds

A one-second period in which at least one ESF error event occurred.

Severely Errored Seconds

A one-second period in which at least 320 CRC errors or one OOF (out-of -frame) occurred.

Loss of Signal Seconds

A one-second period in which the T1 received signal is interrupted.

2000 CSU x.xx/x.xx 2000 CSU Date MM/DD/YY 2000 CSU x.xx/x.xx (Unit Address: xxx) Time HH:MM:SS

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

Element: [NEAR]

Errored Seconds (ES): ( 45) Remote Alarm Seconds (RAS): ( 0) Severely Errored Seconds (SES): ( 5) AIS Seconds (AISS): ( 0) Loss of Signal Seconds (LOSS): ( 5) Out of Frame Seconds (OOFS): ( 5) Unavailable Seconds (UAS): ( 0) BPV Seconds (BPVS): ( 0)

DTE LOS/OOF Seconds (LOSS): ( 5) Alarm Reset Timer (seconds): ( 30)

(GO TO LINE SETTINGS)

Figure 4-15

Alarm Configuration

Utilities Screen

4-19

Unavailable Seconds

A one-second period in which consecutive severely errored seconds cause an unavailable state.

DTE LOS / LOF Seconds

A one-second period in which the T1 received signal (on the CSU’s DTE side) is interrupted or the amplitude drops below a certain level.

Remote Alarm Seconds

Generated by the terminal equipment when an improper signal is received from the facility (or upon receipt of unframed all ones).

AIS Seconds

A one-second period in which all ones are received.

Out of Frame Seconds

A one-second period in which a frame sync loss occurred.

BPV Seconds

Utilities Screen

A one-second period in which at least one bipolar violation occurred.

Alarm Reset Timer

Determines the number of seconds after alarm conditions clear before indications are r em oved.

Go to Line Settings

Pressing Enter here brings up the Line Configuration screen.

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

2000 CSU x.xx/x.xx 2000 CSU Date MM/DD/YY 2000 CSU x.xx/x.xx (Unit Address: xxx) Time HH:MM:SS

---------------------------------- UTILITIES -----------------------------------

Element: [NEAR]

Set Time: (14:10:13) Set Date: (05/12/93)

Alarm Notification: [DIAL ]

Primary Phone#: (1 (205) 555-1212 )

Secondary Phone#: (9,,532-8853,,253 )

Element ID: (Example CSU 2000 )

Figure 4-16

New Password: ()

(MAINTENANCE RESET)

Utilities Screen

4-20 TERMINAL OPERATION

General

Functions

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, 1994 is entered as 070494.

The time and date can be set at the far end, but not displayed.

New Password

This field allows entr y of a password of up to ten char acters. An em pty string (Enter 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 lat er reactivated, this passwor d must be en tered exactly to gain access. If the wrong password is entered, the following message appears:

Incorrect Password; Please Enter Again.

Do not exit the terminal interface program until fully understanding the password procedure. If a password has been specified, type it exactly to reenter the program.

One method of clearing the password is the hardware maintenance reset. To execute the reset function, disconnect power and set configuration DIP switch S6 - 2 (r efer to the Ins tallation ch apter) to ON (u p away from the num bers). Then reconnect power to the unit. After the unit cycles the front panel LEDs, the reset function is completed. Then disconnect the power again and return the switch to the OFF position. Otherwise, when the unit is powered up again, all configuration and password information is lost.

The reset operation sets all parameters to the factory default settings and zeros all performance registers. If the reset operation is not a satisfactory option, then call TxPORT Customer Support for a one time use back door password. See Technical Support on page 1 - 8 for telephone numbers.

Maintenance Reset

This field clears all user-selectable parameters, performance registers, passwords, and alarms. All alarm threshold parameters reset to default values. The unit reloads start-up configuration settings from the source specified by configuration switch S4 (refer to the Installation c hapter). Press ing 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 on NO. To proceed with the reset function, move the cursor to YES and press Enter. A maintenance reset may also be performed using Switch S6 - 2 (see Maintenance Reset on page 2- 9).

Utilities Screen

4-21

COA

Parameters

The following field s pertain to the ca ll on al arm (COA) parame ters.

Alarm Notification

This field controls remote alarm reporting. The choices are as follows.

Disables alarm reporting.

OFF.

DIRECT.

Sends reports to a printer or terminal connected directly to the

supervisory port.

Sends reports through an attached AT-command-set-compatible modem

DIAL.

connected to the SUPV serial port, which must dial out to a remote modem. The message format is described in the Element ID field.

DIAL NMS.

Sends reports through a modem to an EM8000 Network Manager or

8100A Site C ontroller work station.

Primary Phone #, Secondary Phone #

These fields are ASCII strings for the primary and secondary call on alarm phone numbers used in the DIAL and DIAL NMS modes. The strings must be compatible with the standard AT modem command set. They should not include the ATDT dial command prefix.

The unit make three attempts to connect using the primary number. If all three attempts fail, it make 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 with the primary number again. When a connection is detected, the unit outputs the notification message (as described in the Element ID field) then disconnects.

Element ID

This field allows the entry of an ASCII string (29 characters in length) which identifies the unit to the device receiving the alarm notification messages.

Call on alarm messages are reported in the following format in the DIAL or DIRECT modes only.

Element ID HH:MM:SS MM/DD/YY <CR> <LF> NET Alarms: alarms <CR> <LF> DTE Alarms: alarms <CR> <LF>

where (alarm s) is a string cons isting of some or all of the iden tifiers LOS, OOF, RAS, AIS, UAS, ERRS, or the word NONE. The following is an example.

Joesunit 17:24:55 08/04/93 NET Alarms: LOS AIS ERRS DTE Alarms: LOS

The user-programmable Element ID string is transmitted first which allows the COA function to send a message with a specific meaning to some host (such as a log-on message).

The identifier ERRS represents an alarm caused by ES, SES, and / or BPV errors.

4-22

Affidavit for the Connection of

Customer Premises Equipment to

1.544 Mbps and/or Subrate Digital Services

For work to be performed in the certified territory of Telco’s Name: __________________________________________________________________ State of: __________________________________________________________________ County of: __________________________________________________________________

I, _____________________________________, of ___________________________________,

(Name Authorized Representative) (Customer Name)

_____________________________________________, _______________________________,

(Customer Address) (Telephone Number)

being duly sworn, state: I have responsibility for the operation and maintenance of the terminal equipment to be con-

nected to ______________________1.544 Mbps and/or ___________________ subrate digital services. The terminal equipment to be connected complies with Part 68 of the Commissions rules except for the encoded analog content and billing protection specifications. With respect to encoded analog content and billing protection:

➢ I attest that all operations associated with the establishment, maintenance and adjustment of the

digital CPE with respect to encoded analog content and encoded billing information continuously complies with Part 68 of the FCC’s Rules and Regulations.

➢ The digital CPE does not transmit digital signals containing encoded analog content or billing

information which is intended to be decoded within the telecommunications network.

➢ The encoded analog and billing protection is factory set and is not under the control of the cus-

tomer.

I attest that the operator(s) maintainer(s) of the digital CPE responsible for the establishment, maintenance and adjustment of the encoded analog content and billing information has (have) been trained to perform these functions by successfully completing one of the following: Check appropriate ones(s).

❏ A. Training course provided by the manufacturer/grantee of the equipment used to encode

analog signals; or

❏ B. Training course provided by the customer or authorized representative, using training

materials and instructions provided by the manufacturer/grantee of the equipment used to encode analog signals; or

❏ C. Independent training course (e.g., trade school or technical institution) recognized by the

manufacturer/grantee of the equipment used to encode analog signals; or

❏ D.In lieu of the proceeding training requirements, the operator(s) maintainer(s) is(are) under

the control of a supervisor trained in accordance with _________above.

I agree to provide _______________________________________ with proper documentation to

(Telco’s Name)

demonstrate compliance with the information as provided in the proceeding paragraph, if so requested.

________________________________________________ (Signature)

________________________________________________ (Title)

________________________________________________ (Date)

Subscribed and Sworn to before me this ______day of ________________________, 19____.

________________________________________________

Notary Public

My Commission expires: ____________________________________

Verilink 2000 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual