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Cisco Catalyst 4000 Access Gateway Module Installation and Configuration Note
OL-3008-01
Chapter 2 Installing the Access Gateway Module
Connecting the Voice and WAN Interface Modules
Setting the Jumpers on the 2-Port FXS Module
The 2-port FXS voice interface module has two jumper headers (W3 and W4) that you can use to set
loop-start or ground-start mode. One jumper configures each FXS port. The default setting is loop start.
In the default setting, jumpers are placed over positions 2 and 3 of headers W3 and W4.
Most modern central office (CO) equipment, such as the DMS-100 and 5ESS switches, provides the
calling party control (CPC) and Ring on Seize (ROS) features on loop-start lines. CPC provides faster
disconnection, and ROS minimizes glare (collision of inbound and outbound calls on the same
interface). If your CO does not provide these features on loop-start wires, you may want to configure the
FXS module for ground-start operation instead by moving the jumpers to positions 1 and 2.
For proper operation, you must configure both jumpers identically. In most cases, the jumper setting
should have little or no effect on operation.
Note Jumper settings apply only to VIC-2FXS.
Connecting the 2-Port FXS Module
Use a standard RJ-11 modular telephone cable to connect the 2-port FXS module to the PSTN or PBX
through a telephone jack.
To connect the 2-port FXS module, perform these steps:
Step 1 Power off the AGM.
Step 2 Connect one end of the cable to one of the RJ-11 ports of the module, as shown on Figure 2-8.
Step 3 Connect the other end of the cable to the RJ-11 wall jack, as shown on Figure 2-8.
Figure 2-8 Connecting a 2-Port FXS Module (VIC-2FXS)
Step 4
Power on the AGM.
Step 5 verify the LED is green.
Straight-through
RJ-11-to-RJ-11 cable
RJ-11 ports
RJ-11 wall jack
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SEE MANUAL BEFORE INSTALLATION
VIC
FXS
IN USE
IN USE
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