Version 6.2 571 February 2011
SIP User's Manual 8. IP Telephony Capabilities
This example assumes the following:
Device deployed at an enterprise, interfacing between enterprise's IP-PBX and an
Internet Telephony Service Provider (ITSP)
Enterprise deployed with LAN IP phones for VoIP calls
LAN IP phones use G.711 coder
ITSP uses only G.729 coder
Figure 8-85: Advanced Transcoding Example Scenario
8.4.10.5.1 Step 1: Define Coder Groups
The procedure below describes how to configure a Coder Group (with G.711) for the LAN
users and a Coder Group (with G.729) for the ITSP. These Coder Groups are later
assigned to the IP Profiles of the LAN users and ITSP (in ''Step 2: Define an IP Profile'' on
page 569).
¾ To configure Coder Groups:
1. Open the 'Coder Group Settings' page (Configuration tab > VoIP menu > Coders
And Profiles submenu > Coders Group Settings).
2. Add a Coder Group for the LAN users:
a. From the 'Coder Group ID' drop-down list, select '1'.
b. Add an entry for G.711.
Figure 8-86: Defining Coder Group for LAN Users
c. Click Submit.
3. Add a Coder Group for the ITSP:
a. From the 'Coder Group ID' drop-down list, select '2'.
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