Installation guide

A-28
Cisco IGX 8400 Series Installation Guide, Release 9.3.3 and Later Releases
OL-1165-06
Appendix A System Specifications
Cabling Summary
Table A-12 E1 Cabling
Cable Parameter Description
Cable Type 75-ohm coaxial cable for balanced line or 100–120-ohm twisted
pair for unbalanced line. Balanced lines use two cables per E1
port.
Cable Connector Two female BNC for balanced connection; male DB-15 for
unbalanced connection. See Table A-13, Table A-14, and
Table A-15 for pinouts.
Max. Cable Length E1 output complies with G.703, so attenuation must not exceed
–6 dB at 1024 kHz (applies to 75-ohm coaxial or 120-ohm twisted
pair). Maximum length is 100 meters between the IGX node and
the first repeater or CSU.
Table A-13 E1 Connector Pin Assignments
Connector Description
Rx BNC Receive E1 from trunk
Tx BNC Transmit E1 to trunk
Table A-14 D-connector Pinouts for the CVM, NTM, UFM, UVM, and FRM
Pin No. Description
1 Receive, tip
2 Receive pair shield
3 Transmit, tip
9 Receive, ring
10 Transmit pair shield
11 Transmit, ring
Table A-15 D-connector Pinouts for the CVM, NTM, UFM, UVM, and FRM
Pin No. Description
1 Transmit, tip
2 Transmit pair shield
3 Receive, tip
4 Receive pair shield
9 Transmit, ring
11 Receive, ring