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Fundamental structure of RC3000-SUB-DSR:
Voice channel
interface
5.13 Function of RC3000-SUB-D485
RC3000-SUB-D485 is a RS485 serial data sub-card with a standard RS485 interface. There are 8
channels which are decided by hardware, unchangeable. Four RJ45 connectors make up of the 8
channels and each RJ45 connector has two channels. And the definition of each interface is as
follows:
1 2 3 4 5 6 7 8
RJ45-1
Channel
Pins
Channel
Pins
Note: A is the positive output of RS485 Rx data, B is the negative output of RS485 Rx data.
RC3000-SUB-D485 user card has static protection and the serial interface will not be destroyed. In
application, please connect the cable first and then plug the user card into RC3000 slot.
Voice channel control
module
2W & 4W balance
module
Voice D/A
converter
Polarity reversal,
Detect of ring and
on-hook/off-hook
1 2 3 4 5 6 7 8
RJ45-2
1
RJ45-1
1A,2B,3NC,4NC
5A,6B,7NC,8NC
5
RJ45-3
1A,2B,3NC,4NC
5A,6B,7NC,8NC
Voice input &
output
Signal input &
output
Control of
channel output
Figure 5-19
1 2 3 4 5 6 7 8
RJ45-3
Figure 5-20
2
3
RJ45-1
RJ45-2
1A,2B,3NC,4NC
6
7
RJ45-3
RJ45-4
1A,2B,3NC,4NC
User Manual
Bus interface
Multiplexing
Multiplexing
module
Multiplexing
bus module
Control bus
Control bus
module
1 2 3 4 5 6 7 8
RJ45-4
4
RJ45-2
5A,6B,7NC,8NC
8
RJ45-4
5A,6B,7NC,8NC
bus
34
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