Try this: http://www.b2bua.org/wiki/AsteriskCodecNegotiationPatch
Regards, Mindaugas Kezys Kolmisoft UAB VoIP Billing Solutions e-mail: i...@kolmisoft.com URL: http://www.kolmisoft.com -----Original Message----- From: asterisk-users-boun...@lists.digium.com [mailto:asterisk-users-boun...@lists.digium.com] On Behalf Of Steve Davies Sent: Tuesday, June 29, 2010 7:51 PM To: Asterisk Users Mailing List - Non-Commercial Discussion Subject: Re: [asterisk-users] Codec negotiation On 26 June 2010 22:08, Ryan Wagoner <rswago...@gmail.com> wrote: > I have Polycom phones that support the g722 codec. Adding allow=g722 > to the [general] section of sip.conf works great and I can make calls > between the phones using g722. However Asterisk is negotiating g722 > for calls going out my voip provider and transcoding these to ulaw. In > sip.conf for the provider I have deny=all and allow=ulaw. This can > cause potential audio degrading and wastes cpu cycles. If Asterisk > knows the trunk only supports ulaw why would it offer g722 to the > phone. > > Ryan Because the codec is already chosen before the call is made, and you told it that g722 is permitted. There are all sorts of discussions in play about codec negotiation, but at this point in time, if you want different behaviour you'll need to go and code it yourself, and cross-channeltype this is not going to be trivial :) Cheers, Steve -- _____________________________________________________________________ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- New to Asterisk? Join us for a live introductory webinar every Thurs: http://www.asterisk.org/hello asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users -- _____________________________________________________________________ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- New to Asterisk? Join us for a live introductory webinar every Thurs: http://www.asterisk.org/hello asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
