[asterisk-dev] IAX codec selection

Kevin P. Fleming kpfleming at digium.com
Thu Aug 16 11:04:04 CDT 2007

Mihai Balea wrote:

> The way I read the spec is that if you have a CODEC PREFS IE in your NEW
> message, it takes precedence over FORMAT and CAPABILITIES.  So in your
> case, the caller should arrange its codec prefs list to reflect its
> actual preferences (ilbc on top) and the callee should ignore the format
> and capabilities IEs and rely on the incoming codec prefs IE for its
> codec negotiation logic.

And in chan_sip, we *do* rearrange the configured preferences to put the
calling channel's format in the front of the list, to accomplish exactly
what Steve is asking for here. I don't see why we shouldn't do the same
thing in chan_iax2.

Kevin P. Fleming
Director of Software Technologies
Digium, Inc. - "The Genuine Asterisk Experience" (TM)

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