56/64K Csu/Dsu Cable - 3Com SuperStack II User Manual

44 C 4: C
HAPTER ONNECTORS AND
56/64K CSU/DSU
Cable
Transmit ring to network
Transmit tip to network
Receive tip from network
Receive ring from network
C
ABLES
To connect a model 45x or model 55x bridge/router to a data digital
service (DDS), use a cable with an RJ-48S connector. 3Com supplies this
cable.
Figure 16 shows the pin assignments of the cable with both ends
terminated in RJ-48S connectors.
Figure 16 CSU/DSU Cable
To WAN port
1 2 3 4 5 7 8 6
RJ-48S male (shielded)
Name Abbr. Pin
R1
T1
Not connected NC
Not connected NC
Not connected NC
Not connected NC
T
R
RJ-48S male (shielded)
Pin Abbr. Name
1 1 R1
2 2 T1
3 3 NC
4 4 NC
5 5 NC
6 6 NC
7 7 T
8 8 R
To wall outlet
1 2 3 4 5 7 8 6
Transmit ring to network
Transmit tip to network
Not connected
Not connected
Not connected
Not connected
Receive tip from network
Receive ring from network