Cisco 1601 - Router - EN Hardware Installation Manual page 122

Foreign Exchange Office (FXO) Interface Cards
Warning For connections outside the building where the equipment is installed, the following ports must be
connected through an approved network termination unit with integral circuit protection.
FXO
Figure 83
VIC
FXO
Figure 84
VIC2-
2FXO
Figure 85
VIC2-
4FXO
Setting Jumpers on the 2-Port FXO Card
This information does not apply to the VIC2-2FXO card.
Note
The FXO voice interface card includes two jumper headers, W3 and W4, to set loop-start or ground-start
mode. One jumper configures each FXO port. The default setting is loop-start, which should be
satisfactory in most installations. In this setting, jumpers are placed over positions 2 and 3 of headers
W3 and W4.
Most modern central office equipment, such as DMS-100 and 5ESS switches, provides calling party
control (CPC) and Ring on Seize on loop-start lines. CPC allows quicker disconnection, and Ring on
Seize minimizes glare (collision of inbound and outbound calls on the same interface).
If your central office does not provide these features on loop-start, you may want to configure the FXO
card for ground-start operation instead by moving the jumpers to positions 1 and 2.
For proper operation, both jumpers on the VIC-2FXO card must be configured identically.
This setting does not apply to VIC-2FXO-EU and VIC-2FXO-M2 interface cards.
Note
OL-12847-01
6
2-Port FXO Card Front Panel (VIC-2FXO)
1
SEE MANUAL BEFORE INSTALLATION
2-Port FXO Card Front Panel (VIC2-2FXO)
SEE MANUAL
BEFORE INSTALLATION
0
1
4-Port FXO Card Front Panel (VIC2-4FXO)
3 2 1 0
0
IN USE
IN USE
Voice Interface Cards