[Standards] Another Jingle implementation
paulrw at codian.com
Thu Feb 7 15:44:48 UTC 2008
Peter Saint-Andre wrote:
>> I already have support for
>> in-band DTMF, and, once I've written the stuff to negotiate it, will
>> support RFC 4733 DTMF in the content channel. I'll also implement DTMF
>> in the signalling channel.
> I see two options:
> 1. DTMF over XMPP (XEP-0181) ("in-band/signalling")
> 2. DTMF over RTP (RFC 4733) ("out-of-band/media")
> Do you see a third option?
DTMF actually as tones in the audio. Old-fashioned, but valid enough
for G.711, and probably some other codecs as well. Sometimes needed if
going to a SIP to POTS gateway, and not a bad fallback if the far end
doesn't offer support for XEP-0181 or RFC 4733.
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