rachid wrote: > Hello, > > I have some problems to use G722, when my client sent an invite request > to asterisk using G722/16000 codec > asterisk respond with G722/8000 codec. > > I dont know exactly if Asterisk supports G722/16000 codec?? > If yes how can I activate It?? > > Thanks. > > Rachid. > It's known as 'wideband' audio, to provide you with a keyword you can use to track asterisk's implementation of it.
From voip-info[1]: "... Speex - which supports 8, 16 and 32 kHz sample rates and is open source freeware. So if you are looking for wideband VoIP, look at /Speex/. " and "A caveat for Asterisk hacks: The internal guts of Asterisk are still substantially geared for 8 kHz sampling, so arriving wideband signals will end up downsampled. I understand this is pervasive enough in the core code that it is not likely to evolve past 8 kHz for some time to come. " So just tell your client to not /ask/ for 8kHz audio. I wonder, in a SIP reinvite situation, the UAs would re-choose codecs, wouldn't they? So even if asterisk didn't support 16kHz for, say, IVRs, two UAs, once REINVTEd, probably *would* choose 16kHz if they agreed on it. Am I right on REINVITEs providing opportunity for UAs to battle out codecs again? Moj [1] http://www.voip-info.org/wiki/view/Wideband+VoIP _______________________________________________ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
