User's Manual 30. Analog Gateway
Version 6.8 509 Mediant 500L MSBR
30.14.5 FXS Gateway Configuration
The following procedure describes how to configure the FXS interface (at the 'remote PBX
extension').
To configure the FXS interface:
1. In the Trunk Group table (see Configuring Trunk Group), assign the phone numbers
100 to 104 to the device's endpoints.
Figure 30-12: Assigning Phone Numbers to FXS Endpoints
2. In the Automatic Dialing page (see ''Configuring Automatic Dialing'' on page 490),
enter the phone numbers of the FXO device in the ‘Destination Phone Number’ fields.
When a phone connected to Port #1 off-hooks, the FXS device automatically dials the
number ‘200’.
Figure 30-13: Automatic Dialing for FXS Ports
3. In the Outbound IP Routing table (see ''Configuring Outbound IP Routing'' on page
405), enter 20 for the destination phone prefix, and 10.1.10.2 for the IP address of the
FXO device.
Note: For the transfer to function in remote PBX extensions, Hold must be disabled at
the FXS device (i.e., Enable Hold = 0) and hook-flash must be transferred from the
FXS to the FXO (HookFlashOption = 4).
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