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TSU 120

ADTRAN

TSU 120

Card Type

T1 DSU/CSU

Chip Set

Unidentified

I/O Options

V.35 DTE port, T1 test jack - in, T1 test jack - out, T1 test jack - monitor,

DTE test jack - in, DTE test jack - out, DTE test jack - monitor,

RJ-48 control ports (2), T1 network interface via RJ-48, power

DSX-1 DTE interface via RJ-48, Expansion module

T1 Data Rate

1.544Mbps

Line Coding

AMI, B8ZS, RZ, Bipolar

Framing

D4, ESF

Data Bus

External

CONNECTIONS

Function

Label

Function

Label

T1 network port (RJ-48)

CN1

DSX-1 port (RJ-48)

CN8

T1 test jack - in

CN2

Control port - chain in (RJ-48)

CN9

T1 test jack - out

CN3

Control port - chain out (RJ-48)

CN10

T1 test jack - monitor

CN4

V.35 DTE port

CN11

DTE test jack - in

CN5

Power

CN12

DTE test jack - out

CN6

Power switch

SW1

DTE test jack - monitor

CN7

   

Note:

The optional expansion module may feature a switched 56K interface, voice interface, V.35,

RS-232, or ISDN T1 interface

DIAGNOSTIC LED(S)

LED

Color

Status

Condition

OK1

Green

On

DSU is operating in normal mode. No errors have been detected

OK1

Green

Off

DSU is not in normal mode, or errors have been detected

TST1

Yellow

On

DSU is conducting a test

TST1

Yellow

Off

DSU is not conducting a test

ALM1

Red

On

Alarm condition has been detected on DSU

ALM1

Red

Off

Alarm condition has not been detected on DSU

OK2

Green

On

Module is operating in normal mode. No errors have been detected

OK2

Green

Off

Module is not in normal mode, or errors have been detected

TST2

Yellow

On

Module is conducting a test

TST2

Yellow

Off

Module is not conducting a test

ALM2

Red

On

Alarm condition has been detected on option ports

ALM2

Red

Off

Alarm condition has not been detected on option ports

OK3

Green

On

CSU is operating in normal mode. No errors have been detected

OK3

Green

Off

CSU is not in normal mode, or errors have been detected

TST3

Yellow

On

CSU is conducting a test

TST3

Yellow

Off

CSU is not conducting a test

ERR

Red

On

Error has been detected on network. Errors include: BPV, OOF or CRC

ERR

Red

Off

Error has not been detected on network

ALM3

Red

On

Alarm condition has been detected on network

ALM3

Red

Off

Alarm condition has not been detected on network