MyPower VG2000 V4 VoIP Gateway Installation Manual
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Connection Cable of 8FXS Interface Module
The connection cable of the 8FXS interface module is RJ45
cable, 8-core twisted-pair cable.
Interface Parameter of 8FXS Interface Module
Loop current: 18-25mA
Open loop circuit current: >5M
Supported loop length: 1500M
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.
4.1.4 4S4O Interface Module
4S4O Interface Module Appearance
The 4S4O interface module appearance is as shown in Figure
4-4 and it is inserted in the host.
