Installation guide

A-42
Cisco IGX 8400 Series Installation Guide, Release 9.3.3 and Later Releases
OL-1165-06
Appendix A System Specifications
Cabling Summary
HDM EIA/TIA-449/422 Port Pin Assignments
Table A-37 contains a listing of IGX EIA/TIA-449/422 port pin assignments. A standard EIA/TIA-449
cable is used for this application unless the interface is X.21.
17 RxC DD DCE Receiver clock
18 DCR DCE Divided receiver clock
19 SRTS SCA DTE Secondary request to send
20 DTR CD DTE Data terminal ready
21 SQ CG DCE Signal quality detect
22 RI CE DCE Ring indicator
23 SFCI CH
CI
DTE
DCE
Signal rate select (to DCE)
Signaling rate indicator (to DTE)
24 XTC DA DTE External transmitter clock
25 BSY DTE Busy (in service)
Table A-36 HDM EIA/TIA-232C (V.24) Connector Pin Assignments (continued)
Pin No. IGX Name EIA Name Source Description
Table A-37 HDM EIA/TIA-449/422 Connector Pin Assignments
Pin No. IGX Name EIA Name Source Description
1 Both Shield ground
2 SI SI DCE Signaling rate indicator (to DTE)
3Spare
4/22 TxD SD DTE Transmit data from DTE
5/23 TxC ST DCE Transmitter clock
6/24 RxD RD DCE Received data to DTE
7/25 RTS RS DTE Request to send
8/26 RxC RT DCE Receiver clock
9/27 CTS CS DCE Clear to send
10 LL LL DTE Local loopback
11/29 DSR DM DCE Data set ready
12/30 DTR TR DTE Data terminal ready
13/31 DCD RR DCE Data carrier detect (RLSD)
14 RL RL DTE Remote loopback
15 RI IC DCE Ring indicator
16 SF SF DTE Signal rate select (to DCE)
17/35 XTC TT DTE External transmitter clock
18 TM TM DTE Test mode
19 SG Both Signal ground