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Fundamental structure of RC3000-SUB-DO:
Voice
channel
interface
5.4 Function of RC3000-SUB-DSO
RC3000-SUB-DSO is a customized hybrid card of FXS and FXO, there can be N FXS interfaces and
M FSO interfaces (M, N can not be 0, and M+N=8). There totally 8 channels 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
Pins
Channel
Pins
Voice channel control
module
2W & 4W balance
module
Voice D/A
converter
Detect of loop and
ring
Figure 5-7
1 2 3 4 5 6 7 8
RJ45-1
Figure 5-8
1
RJ45-1, 1T,2R
RJ45-1, 3T,4R
5
RJ45-2, 1T,2R
RJ45-2, 3T,4R
Voice input &
out put
Multiplexing
Signal input &
bus module
out put
Control of
channel output
1 2 3 4 5 6 7 8
RJ45-2
2
3
RJ45-1, 5T,6R
6
7
RJ45-2, 5T,6R
interface
Multiplexing
module
Multiplexing
Control bus
Control bus
module
4
RJ45-1, 7T,8R
8
RJ45-2, 7T,8R
User Manual
Bus
bus
25
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