[asterisk-dev] Asterisk dialup connection?

[hadi motamedi]

On Mon, Aug 23, 2010 at 11:29 AM, Hans Witvliet <hwit at a-domani.nl> wrote:

> On Mon, 2010-08-23 at 02:10 -0400, Jeff LaCoursiere wrote:
> > On Mon, 23 Aug 2010, hadi motamedi wrote:
> >
> > > Dear AllI need to offer dialup connection for my subscribers. When I
> put the codec on
> > > G.711 the dialup connection will be successful but for the G.723 &
> G.729 it is not. Can
> > > you please let me know what are stuffs do I need to have dialup
> connection when choosing
> > > G.723 & G.729 codecs?
> > > Thank you
> > >
> >
> > You cannot.  The compression algorithms in those codecs will squash any
> > kind of modem connection.  Even over G.711u I am surprised you have much
> > success.  Certainly nothing over 9600baud?
> >
>
> ???
>
> If one can do voip over satelite with vpn either with compression or
> not, why should a simple dialupmodem not work?
>
> sure, re-recompression (in-affective as it will be) should only add
> unwanted latency, and should be disabled if possible, but when using the
> latest modems 48k or 56k bandwith should be obtainable.
>
> All i could think of, is that the modem connection should allready be
> up-and-running. One can shurely forget about call-triggerd modem
> connections, as it takes quite some time before those modem-connections
> are up-and-running, so any calling party will probably get
> "busy/unobtainable/out-of-order"...
>
> hw
>
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Excuse me, You mean the frequency spectrum of the V.90 modem can pass
through an G.723.1/G.729a codec w/o much distortion? If so, can you please
let me know why my dial up connection cannot get through when G.723.1/G.729a
codec is selected?
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