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Channel 1 2 3 4
Pins RJ45-1, 1T,2R RJ45-1, 3T,4R RJ45-1, 5T,6R RJ45-1, 7T,8R
Channel 5 6 7 8
Pins RJ45-2, 1T,2R RJ45-2, 3T,4R RJ45-2, 5T,6R RJ45-2, 7T,8R
Fundamental structure of RC3000-SUB-DMT:
5.12 Function of RC3000-SUB-DSR
RC3000-SUB-DSR is a FXS phone sub-card with polarity reversal function. There are 8 channels
which are decided by hardware, unchangeable. Two RJ45 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, 1T,2R RJ45-1, 3T,4R RJ45-1, 5T,6R RJ45-1, 7T,8R
Channel 5 6 7 8
Pins RJ45-2, 1T,2R RJ45-2, 3T,4R RJ45-2, 5T,6R RJ45-2, 7T,8R
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8
Figure 5-18
RJ45-1 RJ45-2
Voice channel control
module
Multiplexing module
Voice
channel
interface
Bus
interfaces
Multiplexing
Control bus
Multiplexing bus
process module
Control bus
process module
Voice input &
output
Signal input &
output
Control of
2W & 4W balance
module
Voice D/A converter
Ring output & detect
Interface protection
Figure 5-17
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