There is also something out there called IAX trunking. It can use a low bandwidth codec and put a bunch of simultaneous conversations into fewer packets, which helps to cut down on the high packet tax you'd normally get with packetizing individual voice channels. And works over any IP link. Ray Burkholder ray@oneunified.net http://www.oneunified.net 704 576 5101
-----Original Message----- From: owner-nanog@merit.edu [mailto:owner-nanog@merit.edu] On Behalf Of Bill Woodcock Sent: November 13, 2003 21:10 To: Anton L. Kapela Cc: Robert White; nanog@merit.edu Subject: Re: Voice Compression
On Thu, 13 Nov 2003, Anton L. Kapela wrote: > I would like to also suggest seeking devices that use "iLBC" as a > codec. I've been using this codec for interconnecting voip systems and > have been very pleased with the results. > Check it out: http://www.ilbcfreeware.org
Yep, although I haven't used it yet myself, I've been hearing it very widely praised, particularly for traffic flowing across high-congestion Internet links. Apparently it can sustain 20% packet loss without significant reduction in voice quality. However, this was supposed to be over "T1s" which I assumed to mean point-to-point serial.
-Bill
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