[VoIP] Codec (or is it Codecies?)

[Shane Young]

Basic rule of thumb is always use an uncompressed codec unless you  
need/want to use a compressed codec for a particular reason.


For your internal on-lan devices, I would:

disallow=all
allow=ulaw

On my external devices, I still prefer ulaw beacuse I'd rather use it  
(it sounds better) but allow others to connect to me with codecs they  
my prefer.

So, I might have something like this:

disallow=all
allow=ulaw
allow=g726
allow=gsm

The amount of bandwidth used depends on a lot of things including the  
transport type (ethernet, ADSL, etc)

ulaw= about 80-106kbps
g726= about 48-94kbps
gsm=  about 29-63kbps


Quoting Paul Wills <pdwills at verizon.net>:

> I'm afraid that I may have totally messed up my list of codecs.
>
> For an installation that is using SIP internally and IAX over the   
> network, does anyone have a list of the most appropriate codecs and   
> the optimum preference order?
>
> Thanks,
>
> PDW
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--Shane
+1-821-7311 CNET