A codec is completely independent from the protocol used. I guess you're mistaking the protocol (SIP, IAX2, H.323) for the codec (G.711, G.729, GSM, iLBC).
You don't have to necessarily use G.729 codec, but a lot of VoIP providers use just G.729 or G.711 codecs in their platforms, so it's a matter of interoperability. Also, IMHO, G.729 has the best voice quality for a compressed codec. Many users can't notice the difference in a call using G.711 and G.729. The same can not always be said for other compressed codecs like GSM or iLBC. Vinícius Fontes www.asteriskforum.com.br - Informações e discussão sobre Asterisk e telefonia IP ----- "silent sayz" <[email protected]> escreveu: > Hello > > > > I have a confusion relating to G.729 codec. > I know how to install where to get license but i really don't know why > we need it? > > Why people use G.729 codec with asterisk? > > look all functionality can be done with out it ie calling from sip to > iax protocol and sip/ iax to E1, then why we need this?? > > regards > Adam > > > _______________________________________________ > -- Bandwidth and Colocation Provided by http://www.api-digital.com -- > > AstriCon 2009 - October 13 - 15 Phoenix, Arizona > Register Now: http://www.astricon.net > > 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 -- AstriCon 2009 - October 13 - 15 Phoenix, Arizona Register Now: http://www.astricon.net asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
