Installation guide

A-32
Cisco IGX 8400 Series Installation Guide, Release 9.3.3 and Later Releases
OL-1165-06
Appendix A System Specifications
Cabling Summary
UFM Cabling
Table A-25 lists the cables that can connect to the UFM back cards for synchronous and asynchronous
circuits.
Cabling for the UFM-U Back Cards
This section describes the standard cabling and the Y-cabling scheme for the unchannelized back cards.
The back cards are the UFI-12V.35, UFI-12X.21, and UFI-4HSSI. Because of the port variety and
because the cables are either DCE or DTE, a significant number of cable configurations exist.
Table A-26 shows cable names, part numbers, and descriptions.
18 TM TM DCE Test mode
19 Sig. Gnd. SG Both Signal ground
20 – RC DCE Receive common
28 BSY IS DTE Busy (in service)
32 SS SS DTE Select standby
33 SQ SQ DCE Signal quality detect
34 NS NS DTE New synchronization
36 SB SB DCE Standby indicator
37 – SC DTE Send common
3, 21 –––Spare
Table A-24 T3 Connector Pinouts
Connector Description
Rx BNC Receive T3 from trunk
Tx BNC Transmit T3 to trunk
Table A-23 EIA/TIA-449 Connector Pinouts (continued)
Pin No. IGX Name EIA Name Source Description
Table A-25 UFM Cabling
Cable Parameter Description
Cable type Standard V.35 or X.21
Cable connectors X.21 DTE: DB-60, male (provides two X.21 ports)
X.21 DCE: DB-60, male (provides two X.21 ports)
V.35 DTE: DB-60, male (provides two V.35 ports)
V.35 DCE: DB-60, male (provides two V.35 ports)
HSSI: DB-50, male
Maximum cable length Not to exceed interface standards