[Asterisk-Users] Which Codec(s) to use..?

Richard J. Sears rsears at americanIS.net
Thu Feb 24 17:39:27 MST 2005


Hey Everyone,

I am playing around with my * box, and I have a few different phones
hanging off it it right now.

I have a Cisco 7960 capable of g729, ulaw and alaw, I have a Cisco
ATA186 with a Panasonic cordless phone attached to it, I have a Digum
IAXy with a dumb analog phone attached to it, and I have a Linksys
PAP2-NA with an AT&T 959 analog phone attached to it.

I also have several IAX2 connections, one to NuFone and one to another
provider.


My question revolves around which codec to use. I purchased 10 licenses
of the g729 from Digum thinking it was the "best" since it costs money
:-)

I have read the wiki on the codecs, but I did not find any real
"practical" use suggestions, just info on the codecs and the bandwidth
they used.

In several cases I am not worried about the bandwidth consumption as I
control the connectivity (several phone are behind T1's or high speed
DSL), one of the IAX connections is across my OC48, and several phones
are sitting on my desktop on the lan connected to the * server.

So my question is this - if I am running g729, am I giving up quality
for the sake of bandwidth conservation..? Should I use the codec that
matches the greatest amount of bandwidth that I have available, or go
with the codec that uses the least amount of bandwidth..?

Thanks




******************************************
Richard J. Sears
Vice President         
American Internet Services                          
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rsears at adnc.com
http://www.adnc.com
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