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

[WipeOut .]

> 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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