[Asterisk-Users] Most common CODEC

Carlos Chavez cursor at corplacer.com
Mon Mar 8 22:11:24 MST 2004

On Mon, 8 Mar 2004 23:45:44 -0500, Andrew Kohlsmith wrote
> > G.729 is the best codec IMHO.  Goto
> > http://www.packetizer.com/iptel/bandcalc.html to get the real scoop.
> IMO ILBC beats G.729 in terms of quality, especially in environments 
> where packet loss can occur.  It's about the same computationally-
> speaking but it's also royalty-free.
> GSM is my second choice but it eats quite a bit more bandwidth in 
> comparsion.
> That packetizer link has no comparisons with any OSS codecs, which 
> is unfortunate because it seems to pass itself off as an 
> authoritative source on bandwidth use in IP telephony.

     I am not trying to start a codec war or find out which is the best
protocol.  What I need to know is when I buy a Grandstream phone, a Cisco
phone, a Sippura adaptor or any other hard phone, what codec is usually
supported by all of them.  All of them obviously support G.711 but that is not
the best for use when connecting through the Internet.  Is it worthwhile to
buy G.729 licenses for Asterisk, or is there another codec that is wildly
supported buy most phones?

Carlos Chavez
Computer Engineer, CCNA
Corporativo Lacer S.A. de C.V.

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