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Principle of RC3000-SUB-10FXS is as follow:
Voice channel
interface
5.20 Function of RC3000-SUB-10FXO card
10 FXO audio sub-card is a relay interface module relaying FBX voice channel. There are 10
channels of a FXO and the channel number is decided by hardware and unchangeable. Interface is
made up of 3 RJ45; Definition of RJ45 interface is as follows:
1 2 3 4 5 6 7 8
RJ45-1
5～6
7～8
Voice channel control
module
2W & 4W balance
module
Voice D/A
converter
Detect of ring and
on-hook/off-hook
1 2 3 4 5 6 7 8
RJ45-2
Figure 44
RJ45
Pin
PORT 1
1～2
3～4
5～6
Reserved
Reserved
Voice input &
output
Signal input &
Multiplexing
output
bus module
Control of
channel output
Figure 43
1 2 3 4 5 6 7 8
RJ45-3
Channel
st
1
line
CHANN1A / CHANN1B
nd
2
line
CHANN2A / CHANN2B
rd
3
line
CHANN3A / CHANN3B
Multiplexing
module
Multiplexing bus
Control bus
module
Name
User Manual
Bus interface
Control bus
40
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