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Principle of RC3000-SUB-10FXO is as follow:
Voice channel
interface
5.21 Function of RC3000-SUB-OPT-FE
Optical line-board can communicate with main board and its initial value can be set through DIP
switches. There are 2 groups of 8-bit DIP switches and definitions are as follows:
Switch
SW1
1-4
7～8
1～2
3～4
PORT 2
5～6
7～8
1～2
3～4
PORT 3
5～6
7～8
Voice channel control
module
2W & 4W balance
module
Voice D/A
converter
Detect of ring and
loopback
Definition
Value
FFFF
Optical
module
FFFN
type
FFNF
FFNN
FNFF
th
4
line
CHANN4A / CHANN4B
st
1
line
CHANN5A / CHANN5B
nd
2
line
CHANN6A / CHANN6B
rd
3
line
CHANN7A / CHANN7B
th
4
line
CHANN8A / CHANN8B
st
1
line
CHANN9A / CHANN9B
nd
2
line
CHANN10A / CHANN10B
Reserved
Reserved
Voice input &
output
Signal input &
Multiplexing
output
bus module
Control of
channel output
Figure 45
Explanation
Multiplexing
module
Multiplexing bus
Control bus
module
S1
S2
S3
SS13
SS15
User Manual
Bus interface
Control bus
41
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