8 DUAL ANALOG VOICE I/O CARD
3021M100-002
8-11
8.4.3 FXS
Line impedance is hardware configurable through jumper settings. As an
example, Figure 8-12 shows the jumper bank position for configuring 900 Ohm
impedance.
Figure 8-11 FXO Jumper Settings for Australia
AUS
600
Ω
RJ-11
A
B
C
D
Jumper Bank
600
Figure 8-12 FXS Jumper Settings
600
900
ATT
LK1
RJ-11
Jumper Bank
P2
P1
IMPORTANT:
Bracket must be securely fastened to
rear panel of chassis before powering up the unit,
otherwise overvoltage protection will be disabled.
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