Installation Manual

Release 3.3, Revision A 1/99
12 WAVEXpress/BTS Installation and Commissioning Guide
When connecting a shielded twisted pair T1 cable between two WAVEXpress systems, the routing of the pins needs
to comply with the cable mapping shown in the following illustration:
The RJ-45 cable connector may be of the conventional plastic body type with the shield and drain wires of the cable
connected to a pigtail to pin 8, which is internally grounded to the card. However, a shielded cable plug may also be
used, terminating the cable shield to an integral metal shell of the RJ-48 jack which then makes an electrical connection
to the front panel when installed. Table 1-8 provides the pin assignments for the T1 RJ-48 jacks.
Pi
Figure 1-6:
Cable mapping of pin assignments of port connectors when connecting two WAVEXpress sys-
tems using RJ-45 connectors
Table 1-8:
RJ-48 Pin outs
RJ-48 Pin Number Signal
1 Rx Ring
2Rx Tip
3nc
4 Tx Ring
5Tx Tip
6nc
1
2
3
4
5
6
8
7
1
2
3
4
5
6
8
7
Pin 2: Receive Tip
Pin 5: Transmit Tip
Pin 1: Receive Ring
Pin 4: Transmit Ring
Pin 5: Transmit Tip
Pin 4: Transmit Ring
Pin 1: Receive Ring
Pin 2: Receive Tip
IW352806
Pin Numbers
PCB Signal
Ground
WAVEXpress/BTS
Port Connector
WAVEXpress/BSC
Port Connector