Appendix C. Network Pinouts

Control In/Chain In

This is used as an EIA-232 port for connection to a computer or modem (Control In) or to another TSU 120 or TSU 100 (Chain In). See Table C-2for the pinout for the control/chain-in connec- tor.

Connections

 

The chain-in connections are as follows:

 

Connector type

RJ-48

 

Part number

AMP# 555164-2

 

Table C-2. Control In/Chain in Pinout

 

 

 

 

Pin

 

Name

Description

 

 

 

 

1

 

GND

Ground - connected to unit chassis

 

 

 

 

2

 

RTS

Request to send - flow control

 

 

 

 

3

 

RXDATA

Data received by the TSU 120

 

 

 

 

4

 

UNUSED

 

 

 

 

 

5

 

TXDATA

Data transmitted by the TSU 120

 

 

 

 

6,7

 

UNUSED

 

 

 

 

 

8

 

CTS

Clear to send - flow control

 

 

 

 

C-2

TSU 120 User Manual

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ADTRAN TSU 120e user manual Table C-2. Control In/Chain in Pinout