Rc3000-Sub-Dm4 Audio Relay Card Explanation - Raisecom RC3000 PCM User Manual

Fundamental structure of RC3000-SUB-DM2:
Voice channel control module
Voice channel
2W
interface
module
E & M signal process

7.6. RC3000-SUB-DM4 audio relay card explanation

RC3000-SUB-DM2 is a 4W audio relay card with E&M signal, used for signal and voice
transmission between offices. There totally 8 channels decided by hardware,
unchangeable. Two RJ45 interfaces make up of the 8 channels (each RJ45 interface has
four channnels). Definition of RJ45 interface is as follows:
1 2 3 4 5 6 7 8
RJ45-1
Channel
Pins
Note: 1TA and 2TB is 2-wire voice Tx, 3RA and 4RB is 2-wire voice Rx, 6E is E signal Rx
and 7M is M signal Tx.
& 4W balance
Voice D/A converter
module
Figure 28
1 2 3 4 5 6 7 8
RJ45-2
1
RJ45-1
1TA, 2TB
3RA, 4RB
6E, 7M
Voice input &
output
Signal input &
output
Control of
channel output
1 2 3 4 5 6 7 8
RJ45-3
Figure 29
2
RJ45-2 RJ45-3
1TA, 2TB 1TA, 2TB
3RA, 4RB 3RA, 4RB
6E, 7M 6E, 7M
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Multiplexing module
Multiplexing bus
process module
Control bus process
module
1 2 3 4 5 6 7 8
RJ45-4
3 4
RJ45-4
1TA, 2TB
3RA, 4RB
6E, 7M
Bus
interface
Multiplexing
bus
Control bus