8 DUAL ANALOG VOICE I/O CARD
3021M100-002
8-9
The default settings are 2-wire, 600 Ohm, Type 1, Normal signaling. Figure 8-9
shows the jumper bank locations for the default configuration.
NOTE:
Do not remove LK19. It must remain in position at all times.
8.4.2 FXO
FXO line impedance is hardware configurable through jumper settings; see Table
8-1. As an example, Figure 8-10 demonstrates the jumper bank position for
configuring 600 Ohm impedance.
FXO SLIM LID
for Australia
Table 8-2 provides the FXO jumper settings for Australia. As an example, Figur
8-11 demonstrates the jumper bank position for configuring 600 Ohm impedance.
Figure 8-9 E&M 2/4-Wire Jumper Settings
REV
NOR
VIV III II I
2W
4W
900 600
AUSATT
IIIIIIIVV
Reverse
signaling
signaling
Normal
type
signaling
Ω
Ω
900
600
AT&T
Australia
Complex
2-wire
4-wire
RJ-45
LK19
Jumper Banks
Jumper Banks
Line Impedance
Table 8-1 FXO Jumper Settings for LK1
Location 600 Ohm 900Ohm
AT&T Com-
promise
LK1 connect A-B connect B-C connect C-D