User's Manual 600 Document #: LTRT-27045
Mediant 1000B Gateway & E-SBC
27.14.5 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 Groups), assign the phone numbers
100 to 104 to the device's FXS ports.
Figure 27-13: Assigning Phone Numbers to FXS Endpoints
2. In the Automatic Dialing table (see ''Configuring Automatic Dialing'' on page 581),
configure automatic dialing for the FXS ports to dial the FXO endpoints, as shown in
the figure below. For example, when the phone connected to FXS Port #1 off-hooks,
the device automatically dials the number "200".
Figure 27-14: Automatic Dialing for FXS Ports
3. In the Tel-to-IP Routing table (see ''Configuring Tel-to-IP Routing Rules'' on page
475), enter 20 for the destination phone prefix and 10.1.10.2 for the IP address of the
FXO device.
Figure 27-15: FXS Tel-to-IP Routing Configuration
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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