Raisecom RC3000 PCM - RC3000-SUB-DMT User-Board Explantion

Raisecom Technology Co., Ltd
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7.11. RC3000-SUB-DMT user-board explantion
RC3000-SUB-DMT is a magneto telephone interface card and can transimit magneto
telephone calls (hot-wire magneto telephone). There are 8 channels whitch is decided by
hardware, unchangeable. Two RC45 connectors make up of the 8 channels and each
RJ45 connector has four channels. And the definition of each interface is as follows:
Channel 1 2 3 4
Pins RJ45-1 1A,2B RJ45-1 3A,4B RJ45-1 5A,6B RJ45-1 7A,8B
Channel 5 6 7 8
Pins RJ45-2 1A,2B RJ45-2 3A,4B RJ45-2 5A,6B RJ45-2 7A,8B
Fundamental structure of RC3000-SUB-DMT:
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8
Figure 35
RJ45-1 RJ45-2
Voice channel control
module
Multiplexing module
Voice
channel
interface
Bus
interfaces
Multiplexi
ng bus
Control
bus
Multiplexing bus
process module
Control bus
process module
Voice input &
output
Signal input &
output
Control of
channel output
2W & 4W balance
module
Voice D/A converter
Ring output & detect
Int
erf
ace
pro
tec
tio
n
Figure 36