[Asterisk-Users] update re. Grandstream + SIP + Echo problems ..

[Dave Alan Caruana]

has anyone got G729 and SIP working together?
some config examples would help :)
since I need to do this at a client where I don't
really have internet access, or the will to root
around mailing lists with the client breathing down
my neck!

thsnk
Dave

----- Original Message -----
From: "WipeOut ." <wipeout at linuxmail.org>
To: <asterisk-users at lists.digium.com>
Sent: Thursday, September 04, 2003 7:13 PM
Subject: Re: [Asterisk-Users] update re. Grandstream + SIP + Echo problems
..


> > now .. i have one slight problem left .. although most of my SIP
> > phones are on a LAN connection with the asterisk server,
> > there are two phones which are at a remote office bridged to
> > my LAN via a 128k point to point ADSL .. these do not seem
> > to be working well, you do hear speech but the remote person
> > (dialled over PSTN through an X100P) hears it low and garbled ..
> > I am assuming it's due to the delays in stuffing 64kbits (of g711)
> > over a 128k link and was thinking of switching to G729.
> >
>
> Rememeber G.711 is 64Kbps without overhead.. Actual bandwidth required is
somewhere around 87Kbps.. On a 128Kbps line if anything else uses the line
you will get clicks and breaks in the transmission..
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