asterisk users - Dec 2004 - 711 and 729 with IAX? (IAX Newbie)

If I send a call to a provider over SIP, I have to designate which codec to
use (711 or 729).
Having never used IAX I have to ask: If I send a call via IAX does IAX use
711/729 as well?
If a SIP 729 call uses 20Kbps, what does an IAX/729 call use?

Thanks,
Matthew

> If I send a call to a provider over SIP, I have to designate which codec to
> use (711 or 729).
> Having never used IAX I have to ask: If I send a call via IAX does IAX use
> 711/729 as well?
> If a SIP 729 call uses 20Kbps, what does an IAX/729 call use?
Depends on how you have asterisk setup. Most of us happen to use
gsm over iax which works great (from my perspective) for voice.

That answered my question. My question should have been "does IAX use
codecs
like SIP does?" and since you send gsm over IAX then the answer is yes.

Thanks,
Matthew
----- Original Message ----- 
From: "Rich Adamson" <radamson@routers.com>
To: "Asterisk Users Mailing List - Non-Commercial Discussion"
<asterisk-users@lists.digium.com>
Sent: Wednesday, December 22, 2004 3:22 PM
Subject: Re: [Asterisk-Users] 711 and 729 with IAX? (IAX Newbie)

> > If I send a call to a provider over SIP, I have to designate which
codec
to
> > use (711 or 729).
> > Having never used IAX I have to ask: If I send a call via IAX does IAX
use
> > 711/729 as well?
> > If a SIP 729 call uses 20Kbps, what does an IAX/729 call use?
>
> Depends on how you have asterisk setup. Most of us happen to use
> gsm over iax which works great (from my perspective) for voice.
>
>
>
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