Raisecom Technology Co., Ltd
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7.2. RC3000-SUB-DS user voice card explanation
FXS is a user voice card with feed voltage and feed ring and can be connected to
exterior line interface of FBX. There are 8 channels of a FXS and the channel number is
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:
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-DS:
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8
Figure 22
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
Detect of ring and
pickup/hangup
Int
erf
ac
e
pr
ot
ec
tio
n
Figure 23
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