[SIPForum-discussion] how to parse DTMF digits in RTP packet using ethereal

[Kevin P. Fleming]

Eric Burger wrote:
> Proxies deal with signaling. Media servers deal with media.
> 
> RFC2833 is media. BY DESIGN it does not flow through proxies.
> 
> If you need user stimulus signaling, like key press information, to go
> to a proxy, use KPML (RFC 4730). Otherwise, you need a media server in
> the media path to interpret the RFC 2833 digits, or tones, for that matter.

SIP INFO messages are also an option for DTMF to be sent through the
signaling path, and are more widely supported than KPML, although they
are less well standardized.

-- 
Kevin P. Fleming
Digium, Inc. | Director of Software Technologies
445 Jan Davis Drive NW - Huntsville, AL 35806 - USA
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