Dave,
QAs far as I remember it, it goes like this... if your inside phone is
*only* G711-alaw and your trunk (SIP or IAX) is *only G711-ulaw that at
session negotiation (call setup) Asterisk will woprk out that it has to
remain "in the loop" and transcode.
If you run-up asterisk and bother to watch the start-up debug messages then
it shows you the relative costs (in terms of CPU utilisation per call) for
the various transcoding between codecs. From recollection G.711-Alaw to
G.711-Ulaw is relatively inexpensive with a cost of "1" ...
Regards
Mike
----- Original Message -----
From: "David Thomas" <punknow@gmail.com>
To: <asterisk-users@lists.digium.com>
Sent: Monday, August 14, 2006 8:57 PM
Subject: [asterisk-users] g.711 Codec Question
> Greeting Everyone,
>
> I don't have access to Asterisk box right now or I'd check this
myself...
>
> If my client phone uses g.711 (alaw) and my outbound trunk leaving
> asterisk uses g.711 (ulaw), will asterisk have to transcode? If so is
> the processing overhead much?
>
> regards,
> Dave
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