Raisecom RC3000 PCM - RC3000-SUB-DSR User-Board Explanation

Raisecom Technology Co., Ltd
44
7.12. RC3000-SUB-DSR user-board explanation
RC3000-SUB-DSR is a phone interface card with polarity reversal function. There are 8
channels which are decided by hardware, unchangeable. Two RC45 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 1A,2B RJ45-1 3A,4B RJ45-1 5A,6B RJ45-1 7A,8B
Channel 5 6 7 8
Pins RJ45-2 1A,2B RJ45-2 3A,4B RJ45-2 5A,6B RJ45-2 7A,8B
Fundamental structure of RC3000-SUB-DSR:
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8
Figure 37
RJ45-1 RJ45-2
Voice channel control
module
Multiplexing
module
Voice
channel
interface
Bus
inteface
Multiplexi
ng bus
Control
bus
Multiplexing
bus module
Control bus
module
Voice input &
output
Signal input
& output
Control of
channel
output
2W & 4W balance
module
Voice D/A
converter
Polarity reversal,
Detect of ring and
pickup/hangup
Int
erf
ac
e
pr
ot
ec
tio
Fi
g
ure 38