Huawei eSpace U1900 Series Quick Installation Manual page 10

Pos.1
DB26
Pos.26
Pos.1
DB9
Pos.9
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.
4T1 trunk cable (DB26
connector, applicable to
the U1910&U1930)
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.
Pos.1
DB26
Pos.26
RJ48C
Pos.1
DB9
Pos.9
4E1 trunk cable pin assignment
DB26 Pin Foot Signal
1/2 RX0+/RX0-
19/20 TX0+/TX0-
3/4 RX1+/RX1-
21/22 TX1+/TX1-
5/6 RX2+/RX2-
23/24 TX2+/TX2-
7/8 RX3+/RX3-
25/26 TX3+/TX3-
1T1 trunk cable (DB9
connector, applicable to the
U1911&U1960&U1981)
4T1 trunk cable pin assignment
DB26 Pin
Foot
1/2 RX0+/RX0-
19/20 TX0+/TX0-
3/4 RX1+/RX1-
21/22 TX1+/TX1-
5/6 RX2+/RX2-
23/24 TX2+/TX2-
7/8 RX3+/RX3-
25/26 TX3+/TX3-
1 8
1T1 trunk cable pin assignment
DB26 Pin
Foot
1/2 RX0+/RX0- White and orange/Orange
6/7 TX0+/TX0-
2T1 trunk cable pin assignment
DB26 Pin
Foot
1/2 RX0+/RX0- White and orange/Orange
6/7 TX0+/TX0-
3/4 RX1+/RX1-
8/9 TX1+/TX1-
1E1 trunk cable pin assignment
Port DB26 Pin Foot
R0
T0
R1
2E1 trunk cable pin assignment
T1
DB26 Pin Foot
R2
T2
R3
T3
2T1 trunk cable (DB9
connector, applicable to the
U1911&U1960&U1981)
Signal Wire Pair
White/Blue
White/Orange
White/Green
White/Brown
White/Gray
Red/Blue
Red/Orange
Red/Green
Signal Wire Pair
White and blue/Blue
Signal Wire Pair
White and blue/Blue
White and green/Green
White and brown/Brown
10
Signal
1/2 RX+/RX-
6/7 TX+/TX-
Signal
1/2 RX0+/RX0-
6/7 TX0+/TX0-
3/4 RX1+/RX1-
8/9 TX1+/TX1-
RJ48C Pin
Foot
2/1
5/4
2/1
5/4
2/1
5/4
2/1
5/4
RJ48C Pin
Foot
2/1
5/4
RJ48C Pin
Foot
2/1
5/4
2/1
5/4
Port
R0
T0
Port
R0
T0
R1
T1
Port
R0/T0
R1/T1
R2/T2
R3/T3
Port
R0/T0
Port
R0/T0
R1/T1