Altigen AltiWare ACM 5.2 Administration Manual page 229

Chapter 16: Setting Up IP Extensions
For remote IP phone deployment
If you do not enter the remote IP phone's IP address into the IP Codec table, the system
will use the Default (Prefer G.723.1 support G.729) setting. You can change the Default
to Prefer G.729 support G.723.1, if desired.
To set up the VoIP codec and define IP address ranges, see "Setting VoIP Codec Profiles"
on page 316 and "Assigning Codec Profiles to IP Addresses" on page 318.
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