Huawei eSpace U1900 Series - Page 10

10
4T1 trunk cable (DB26
connector, applicable to
the U1910&U1930)
b
Assembling the RJ48C Connector (for 100-ohm T1 Cables)
The RJ48C connector is used by 100-ohm balanced T1 trunk cables. Depending on the
device model, either of the following T1 trunk cables with a RJ48C connector assembled
is delivered with the device.
If you need to reassemble a RJ48C connector, strip off the jacket of the twisted-pair
cable, sort the core wires according to the pin assignment, insert the sorted core wires
into the RJ48C connector, and use a crimping tool to crimp the connector. If you do not
have a RJ48C connector, use a RJ45 connector instead.
1T1 trunk cable (DB9
connector, applicable to the
U1911&U1960&U1981)
4E1 trunk cable pin assignment
DB26 Pin Foot Signal Port
1/2 RX0+/RX0- R0
19/20 TX0+/TX0- T0
3/4 RX1+/RX1- R1
21/22 TX1+/TX1- T1
5/6 RX2+/RX2- R2
23/24 TX2+/TX2- T2
7/8 RX3+/RX3- R3
25/26 TX3+/TX3- T3
4T1 trunk cable pin assignment
DB26 Pin
Foot
Signal Wire Pair
RJ48C Pin
Foot
Port
1/2 RX0+/RX0- White/Blue 2/1
R0/T0
19/20 TX0+/TX0- White/Orange 5/4
3/4 RX1+/RX1- White/Green 2/1
R1/T1
21/22 TX1+/TX1- White/Brown 5/4
5/6 RX2+/RX2- White/Gray 2/1
R2/T2
23/24 TX2+/TX2- Red/Blue 5/4
7/8 RX3+/RX3- Red/Orange 2/1
R3/T3
25/26 TX3+/TX3- Red/Green 5/4
Pos.1
Pos.26
Pos.1
Pos.9
DB26
DB9
Pos.1
Pos.26
DB26
Pos.1
Pos.9
DB9
81
RJ48C
1T1 trunk cable pin assignment
DB26 Pin
Foot
Signal Wire Pair
RJ48C 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
1E1 trunk cable pin assignment
DB26 Pin Foot Signal Port
1/2 RX+/RX- R0
6/7 TX+/TX- T0
2E1 trunk cable pin assignment
DB26 Pin Foot Signal Port
1/2 RX0+/RX0- R0
6/7 TX0+/TX0- T0
3/4 RX1+/RX1- R1
8/9 TX1+/TX1- T1
2T1 trunk cable pin assignment
DB26 Pin
Foot
Signal Wire Pair
RJ48C 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
2T1 trunk cable (DB9
connector, applicable to the
U1911&U1960&U1981)