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This topic describes the pin assignments of the E1 and T1 trunk cables.
E1 Trunk Cable
Table 2 1E1 trunk cable pin assignments (applicable to the X1911/X1960/X1981)
DB9 Pin Foot |
Signal |
Port |
1/2 |
RX+/RX- |
R0 |
6/7 |
TX+/TX- |
T0 |
Table 3 2E1 trunk cable pin assignments (applicable to the X1911/X1960/X1981)
DB9 Pin Foot |
Signal |
Port |
1/2 |
RX0+/RX0- |
R0 |
6/7 |
TX0+/TX0- |
T0 |
3/4 |
RX1+/RX1- |
R1 |
8/9 |
TX1+/TX1- |
T1 |
Table 6 Pin assignments of the E1 trunk 75to-120ohm transfer box
75-ohm Signal Side Pin Foot |
Port |
120-ohm Signal Side Pin Foot |
RX+/RX- |
RX |
4/5 |
TX+/TX- |
TX |
1/2 |
T1 Trunk Cable
Table 8 1T1 trunk cable pin assignments (applicable to the X1911/X1960/X1981)
DB9 Pin Foot |
Signal |
Wire Pair Color |
RJ48 Pin Foot |
Port |
1/2 |
RX+/RX- |
White and orange/Orange |
2/1 |
R0/T0 |
6/7 |
TX+/TX- |
White and blue/Blue |
5/4 |
Table 9 2T1 trunk cable pin assignments (applicable to the X1911/X1960/X1981)
DB9 Pin Foot |
Signal |
Wire Pair Color |
RJ48 Pin Foot |
Port |
1/2 |
RX0+/RX0- |
White and orange/Orange |
2/1 |
R0/T0 |
6/7 |
TX0+/TX0- |
White and blue/Blue |
5/4 |
|
3/4 |
RX1+/RX1- |
White and green/Green |
2/1 |
R1/T1 |
8/9 |
TX1+/TX1- |
White and brown/Brown |
5/4 |
Table 10 4T1 trunk cable pin assignments (applicable to the )
DB50 Pin Foot |
Signal |
Wire Pair Color |
RJ48 Pin Foot |
Port |
30/31 |
RX0+/RX0- |
Blue/White |
2/1 |
R0/T0 |
2/3 |
TX0+/TX0- |
Orange/White |
5/4 |
|
36/37 |
RX1+/RX1- |
Green/White |
2/1 |
R1/T1 |
8/9 |
TX1+/TX1- |
Brown/White |
5/4 |
|
42/43 |
RX2+/RX2- |
Grey/White |
2/1 |
R2/T2 |
14/15 |
TX2+/TX2- |
Blue/Red |
5/4 |
|
48/49 |
RX3+/RX3- |
Orange/Red |
2/1 |
R3/T3 |
20/21 |
TX3+/TX3- |
Green/Red |
5/4 |
Parent Topic: Pin Assignment Reference