[Asterisk-Users] iconnect quality?

[Dan Fernandez]

Yes, 64K is not much of a broadband and believe it or not, I am paying US$60
for it (I believe this is the case in many 3rd world countries).

Is there a codec translator between GSM and g723?

How come I can use FWD just fine with g711?

----- Original Message -----
From: "Steven Critchfield" <critch at basesys.com>
To: <asterisk-users at lists.digium.com>
Sent: Monday, March 10, 2003 5:33 PM
Subject: Re: [Asterisk-Users] iconnect quality?


> On Mon, 2003-03-10 at 13:47, Dan Fernandez wrote:
> > Iconnect uses codecs g723 and g711 that can be configured for each
account
> > (you can change them by the 7777 prefix)
> >
> > With their dialer and g723 I can here just fine (I  have a 64k broadband
> > connection). With their dialer and g711 the quality suffers greatly.
> >
> > With * and GSM I cannot here anything (and don´t know if they can here
me).
> > The call gets logged on  iconnect´s CDR. Upon looking at the SIP debug
> > everything appears just fine, but again, I cannot hear anything.
>
> g711 is 8 bit 8khz, or 64Kbit of audio data alone without the overhead
> of TCP/IP nor SIP. 64Kbit is not broadband, it is a DS0. It may be a tad
> over dial up, but please don't consider it broadband.
>
> This would explain your quality problem, you fill the link in the first
> set of samples, and the rest is queued up and therefore does not arrive
> like a stream should. Each fram probably adds a millisecond or more to
> the stream and soon enough you are so starved for audio data that it
> should give up.
> --
> Steven Critchfield  <critch at basesys.com>
>
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