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[Linphone-developers] SIP SDP Offer/Answer - Codec Negotiation - Second

From: jose fernandes
Subject: [Linphone-developers] SIP SDP Offer/Answer - Codec Negotiation - Second Offer
Date: Thu, 10 Nov 2016 11:52:02 +0100

Hi all,

I noticed that in SDP codec negotiation linphone replies to an offer with all matching codecs in the preference order as in the offer. This way, in negotiation, the first codec chosen is always the same in both sides.

But I also noticed that contrary to other softphones, linphone doesn't use second offer to elect  only 1 codec as a chosen one.

Can see an example on Session Description Protocol (SDP) Offer/Answer Examples of IETF.

2.2 Audio and Video 2

Is this somehow configurable? Was this an development choice? Or some feature that you pretend implement in future?

Thank you
Jose Fernandes

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