SIP User's Manual 568 Document #: LTRT-12804
Mediant 800 MSBG
c. In the 'Trunk Group ID' field, enter '1'.
d. Click Submit.
3. Add a rule for routing all other calls to FXS users:
a. In the 'Dest Phone Prefix', 'Source Phone Prefix' and Source IP Address' fields,
enter an asterisk symbol (*) to indicate any.
b. In the 'Trunk Group ID' field, enter '2'.
c. Click Submit.
Figure 8-81: Defining IP-to-Tel Routing Rules
8.4.10.4 Basic Coder Transcoding
This section describes how to configure the SBC coder transcoding feature. This feature
enables SIP entities supporting different codecs to communicate with one another by
offering additional coders supported by the another.
This example is based on the general scenario described in ''General SBC Setup'' on page
546, but in ad
dition assumes the following:
IP Phone #1 (USER1) supports G.711
IP Phone #2 (USER2) supports G.729
This example configuration allows the two LAN IP Phones (pertaining to IP Group #1) to
communicate with one another and requires the following additional configuration:
Define a Coder Group with coders G.711 and G.729.
Define an IP Profile with the field 'Extension Coders Group ID' set to the defined
Coder Group mentioned above.
Assign the IP Profile to the LAN users IP Group.
8.4.10.4.1 Step 1: Define a Coder Group
The procedure below describes how to configure a Coder Group, which defines the coders
used by the LAN IP Phones.
¾ To configure a Coder Group:
1. Open the 'Coder Group Settings' page (Configuration tab > VoIP menu > Coders
And Profiles submenu > Coders Group Settings).
2. From the 'Coder Group ID' drop-down list, select '1'.
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