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Fundamental structure of RC3000-SUB-DSR:
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:
Channel 1 2 3 4
Pins
RJ45-1
1A,2B,3NC,4NC
RJ45-1
5A,6B,7NC,8NC
RJ45-2
1A,2B,3NC,4NC
RJ45-2
5A,6B,7NC,8NC
Channel 5 6 7 8
Pins
RJ45-3
1A,2B,3NC,4NC
RJ45-3
5A,6B,7NC,8NC
RJ45-4
1A,2B,3NC,4NC
RJ45-4
5A,6B,7NC,8NC
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.
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8
RJ45-1 RJ45-2
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8
Figure 5-20
RJ45-3 RJ45-4
Control of
channel output
Voice channel control
module
Multiplexing
module
Voice channel
int
rfa
Bus interface
Multiplexing
us
Multiplexing
bus module
Control bus
module
Voice input &
out
ut
Signal input &
output
2W & 4W balance
module
Voice D/A
converter
Polarity reversal,
Detect of ring and
on-hook/off-hook
Interface
rotection
Figure 5-19
Control bus
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