Appendix C. Network PinoutsC-2 TSU 600 User Manual 61202076L1-1Control In/Chain InThis is used as an EIA-232 port for connection to a computer or modem(Control-in) or to another TSU 600 or TSU 100 (chain-in). See Table C-2,Control In/Chain In Pinout for the pinout for the control-in/chain-in con-nector.Chain-in ConnectionsThe chain-in connections are as follows:Connector Type RJ-48Part Number AMP# 555164-2Table C-2. Control In/Chain In PinoutPin Name Description1 GND Ground-connected to unit chassis2 RTS Request to send-flow control3 RXDATA Data received by the TSU 6004 UNUSED5 TXDATA Data transmitted by the TSU 6006,7 UNUSED8 CTS Clear to send -- flow control