MyPower VG2000 V4 VoIP Gateway Installation Manual
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Figure 4-4 4S4O interface module diagram
4S4O interface module has two RJ45 interfaces. One RJ45
interface supports 4-channel FXS, used to connect the phone
terminal. One RJ45 interface supports 4-channel FXO, used to
connect the switch.
Connection Cable of 4S4O Interface Module
The connection cable of the 4S4O interface module is RJ45
cable, 8-core twisted-pair cable.
Interface Parameter of 4S4O Interface Module
Current: 0-110mA
DC load impedance: 300
Ω
Enable voltage of ring detection: 23V, frequency range:
15-75Hz
Line impedance: The return loss meets the G.712 and Q.552
standards.
Ring current: 25HZ, 48PPV
The change of the gain with the frequency, the change of the
gain with the input level, total distortion, idle channel noise,
outband
and
inband
noise,
secondary
and
third
inter-modulation, and group delay code all meet the related
indexes in the G.712 and Q.552 standards.
Vertical balance impedance 600
Ω
and reflection loss index
both meet the related indexes in the G.712 and Q.552
standards.
