ADTRAN TSU 120e - Manual (Page 120)

Appendix C. Network Pinouts
C-2 TSU 120 User Manual 61202129L1-1
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-2 for 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