Installation guide

5-8
Cisco 10000 Series Routers Line Card Hardware Installation Guide
OL-6773-04
Chapter 5 24-Port Channelized E1/T1 Line Card Overview
Cables, Connectors, and Pinouts
Using the BNC Cable Adapter
Figure 5-4 shows the adapter cable available for the 24-port channelized E1/T1 line card.
Figure 5-4 Faceplate, Connecting Cable, and Adapter Cable
An RJ-45 STP cable with two male RJ-45 connectors is required to connect the adapter cable and
RJ-45 ports on the face of the line card (Figure 5-5).
Figure 5-5 75–120 Ohm Adapter Cable
Cisco cable adapters (CAB-ADAPT-75-120=) connect 75-ohm unbalanced G.703 E1 coaxial BNC
transmit and receive lines to Cisco E1 120-ohm balanced transmit and receive lines.
The connections are made through eight-pin RJ-45 jacks on the 120-ohm side of the adapter cable and
dual coaxial lines (transmit and receive) with BNC connectors at the 75-ohm side.
1 Adapter cable 3 Connecting cable (RJ-45 STP, male/male)
2 RJ-45 ports on faceplate
2
1
3
RJ-48c
CONNNECT XMIT SHIELD TO GND 12
12
DISCONNNECT XMIT SHIELD TO GND 12
X
MIT
RCV
CISCO
10000
FAIL
11
10
1
126772
45561
DISCONNECT XMIT SHIELD TO GND 1 2
CONNECT XMIT SHIELD TO GND 1 2
1 2
DISCONNECT XMIT SHIELD TO GND 1 2
CONNECT XMIT SHIELD TO GND 1 2
12
X
MIT
RJ-48c
RCV