Verilink 210 User Manual

TRANSPORT

®

®

USTOMERSERVICE

TRANSPORT

TxPORT

127 Jetplex Circle
Madison, Alabama 35758

C

T e le ph one Number : 800-926-0085 or

205-772-3770

Sales /Administration FAX: [phone]

Customer Service Returns: 800-926-0085, ext. 227

Product Technical Support

Normal Hours:
8 a.m. to 5 p.m. Central Time, Monday – Friday

T e le ph one Number : 800-285-2755

205- 772-3770, ext. 255
or ext. 252 (manager)

Emergency Hours (Nights / Weekends / Holidays):

800- 285-2755
205-603-2194 (Manager)

P

RODUCTIVITY

S

200 CSU
210 CSU

R

EFERENCE

34-00196

1

ST

ERIES

M

E

DITION

ANUAL

1 16

OPYRIGHT/LIABILITY

DTE

NET

Local Loopback

DTE

NET

AIS

Remote Loopback

C

© 1995 TxPORT, All rights reserved. No part o f this publica tion may be rep roduced,
transmitted, transcribed, stored in a retrieval system, or translated into any language in
any form by any means without the written permission of TxPORT.

Reorder # 34-00196

1st Edition, March 1995

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 pre liminary and/or may be c hanged at any time
without notice and shall not be regarded as a warranty.

The controls, indicators and test features are identical for both units except for the front
panel ‘FAR’ indicator, which is found only on the 200 CS U. Each unit uses LED in di­cators to convey major alarm conditions and looping status. Loop s are initiated using
the network test switch.

3.1 Testing

The front panel test switch is used for local testing. When placed in the local loop
mode (LOOP), the unit loops the signal from the customer equipment (DTE IN) back
to the customer equipment (DTE OUT). It also loops the received signal from the T1
facility (NET IN) back to the T1 facility (NET OUT). When moved back to ‘NORM’,
the local loopback is removed.

The unit can also be looped remotely by generating towards it a standard CSU line
loopback code (000 01 repeating for Š 5 se conds, framed or unframe d). Once looped,
the received signal from the T1 facility (NET IN) is regenerated and transmitted back
to the T1 facility (NET OUT). The unit can be unlooped remotely by generating
towards it a standard CSU line unloop code (001 repeating for Š 5 seconds, framed or
unframed).

Documentation Disclaimer
TxPORT makes no representation or warranties of any kind what soever with respect to

the contents hereof and specifically disclaims any implied warranties of merchantabil­ity or fitness for any particular purpose.

2

DIP switch S1-6 configures the unit to either generate an unframed all ones (AIS) sig­nal to the DTE or to pass the received data from the network to the DTE. The 200 unit
responds to the facility data link (FDL) loop (PLB, 0000111011111111) and unloop
command messages (0011100011111111) .

15

O

PERATION

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ABLE OFCONTENTS

3.0 Introduction

This chapter describ es the front panel operat ion and test features of the TxPORT 200
and 210 CSUs. Both units are controlled manually using a front panel test switch and
rear panel DIP switches (the DIP switches are discussed in the ‘Installation’ chapter).
The front panel switch and the LED indicators are described below.

200 CSU Front Panel

PRODUCTIVITY SERIES 200

®

TRANSPORT

CSU

POWER

1

DTE T1 Status:

2

of signal condition for Š 175 bit times from the DTE. The LED stays lit until the
unit detects Š 4 pulses in 32 bit times.

Network T1 Status:

3

loss of signal condition for Š 175 bit times from the network. The LED stays lit
until the unit detects Š 4 pulses in 32 bit times.

Far end T1 status

4

cuitry detects a yellow alarm signal from the far end terminal equipment. This con­dition occurs if the far end terminal is out of sync with the T1 signal from the
network. The format for a yellow alarm is bit 2 set to 0 in each DS0 (D4 mode) or
8 ones/8 zeros in the facility data link (ESF mode).

Loop:

5

switch is placed in the ‘LOOP’ position or the unit receives an inband loop code
for > 5 seconds, or (for the 200 only) the unit re ceives an FDL loop message (PLB
or LLB). The LED does not light if the test switch is placed in the ‘NORM’ posi­tion or if an inband or FDL unloop code is received for >5 seconds.

Te st Swi tch:

6

local loop mode (LOOP), the unit loops the signal from the customer equipment
(DTE IN) back to the customer equipment (DTE OUT). It also loops the received
signal from the T1 facility (NET IN) back to the T1 facility (NET OUT). When
moved back to ‘NORM’, the local loopback is removed.

: This green LED lights when power is applied to the unit.

This amber LED lights under the following conditions: the manual loop

PWR DTE NET LOOPFAR

This red LED lights if the internal alarm circuitry detects a loss

This red LED lights if the internal alarm circuitry detects a

(200 CSU only): This red LED lights if the internal alarm cir-

This 2-position switch is used for local testing. When placed in the

LOOP NORM

654321

General

Introduction ................................................................................... 4

Specifications ................................................................................ 5

FCC Requirements ........................................................................ 6

Warranty ........................................................................................ 7

Ordering Numbers .................................................... ..................... 8

Installation

Introduction ................................................................................... 9

Supplied Materials ........................................................................ 9

Unit Configuration ........................................................................ 9

Configuration Switch S1 ........................................................ 10

Configuration Switch S2 ........................................................ 11

Connections ................................................................................... 12

DTE and Network Connections ............................................. 13

Power Connection .................................................................. 13

Operation

Introduction ................................................................................... 14

Testing ........................................................................................... 15

TxPORT Customer Service .......................................................... 16

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