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Jack
Pin
Telco
RX
Signal Name
Board
Pins
Jack
Pin
Telco
TX
Signal Name
Board
PIns
Line
Board
Connector
4
28
RX_RING_P31
55
1
28
TX_RING_P31
37
Line 31
PORTS
16-31
5
3
RX_TIP_P31
21
2
3
TX_TIP_P31
3
The table below shows the wiring schematic of the cable used to connect the 32 T1/E1 interface module to
the rear of the patch panel.
Figure 119: 32 T1/E1 Wiring Schematic of Cable between 32 T1/E1 Interface and Patch Panel
8 T1/E1 Interface Module RJ48C Port Pinnouts
Table 34: RJ48C Connector Pin-out for 8 T/E1 Interface Module
Description
Direction
Signal
Pin
Receive Tip
Input
RX_TIP
1
Receive Ring
Output
RX_RING
2
Not Connected
—
—
3
Receive Tip
Input
TX_TIP
4
Receive Ring
Output
TX_RING
5
Not Connected
—
—
6
Not Connected
—
—
7
Not Connected
—
—
8
Cisco ASR 903 and ASR 903U Aggregation Services Router Hardware Installation Guide
170
Troubleshooting
8 T1/E1 Interface Module RJ48C Port Pinnouts
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