[VoiceOps] ATA CPE and RFC2833

Alex Balashov abalashov at evaristesys.com
Thu Feb 16 02:59:14 EST 2012

On 02/16/2012 01:40 AM, Peter Childs wrote:

> I'm working through one of those lovely DTMF issues and have notice
> that a particular CPE that is experiencing a DTMF fault on our network
> sends both rfc2833 rtp packets _and_ the tone in audio stream (not
> named rtp packets, but how the device has 'heard' the tones from the
> originating handset).

Out of curiosity, how did you arrive at this conclusion?

If you play back such a stream in, say, Wireshark, it will generally 
inject some sort of acoustic tone when it encounters the out-of-band 
named events.

Alex Balashov - Principal
Evariste Systems LLC
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Web: http://www.evaristesys.com/, http://www.alexbalashov.com/

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