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Signaling and Pin definition of LINK DOWN interface:
d. Definition of balanced RC3000-4E1 E1 interface:
Balanced E1 interface is RJ45 interface, and the Signaling and Pin definition are:
5.2 Function of RC3000-SUB-DS
FXS is a user audio card with feed and feed ring and can be connected to exterior line interface of
FBX. There are 8 channels of a FXS and the channel number is decided by hardware, unchangeable.
Two RJ45 interfaces make up of the 8 channels (each RJ45 interface has four channels). Definition
of RJ45 interface is as follows:
Channel
Pin No.
Channel
Pin No.
Pin number
Signal
3
TXD
7
RXD
4,8
GND
Pin number
Signal
1
OUT+
2
OUT-
4
IN+
5
IN-
1 2 3 4 5 6 7 8
RJ45-1
1
RJ45-1, 1T,2R
RJ45-1, 3T,4R
5
RJ45-2, 1T,2R
RJ45-2, 3T,4R
Explanation
Rx of RC3000
Tx of RC3000
Ground of RC3000
Explanation
Positive Tx of balanced E1 interface
Negative Tx of balanced E1 interface
Positive Rx of balanced E1 interface
Negative Rx of balanced E1 interface
1 2 3 4 5 6 7 8
RJ45-2
Figure 5-4
2
3
RJ45-1, 5T,6R
6
7
RJ45-2, 5T,6R
User Manual
4
RJ45-1, 7T,8R
8
RJ45-2, 7T,8R
23
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