For efficiency & reliability, when SIP transmits DTMF as non-audio data, it uses RFC2833 or INFO. My question is - (not knowing much about IAX2) - when IAX2 transmits DTMF as non-audio data - is it also using RFC2833 and/or INFO, or it it using some other IAX2-specific mechanism with its own name? Thank you, Brent -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.digium.com/pipermail/asterisk-users/attachments/20041230/b96818d0/attachment.htm
Brent Goran wrote:> For efficiency & reliability, when SIP transmits DTMF as non-audio data, > it uses RFC2833 or INFO. > > My question is - (not knowing much about IAX2) - when IAX2 transmits > DTMF as non-audio data - is it also using RFC2833 and/or INFO, or it it > using some other IAX2-specific mechanism with its own name?I believe it uses it's own method. IAX and IAX2 do not support inband dtmf in anyway.
On Thu, 30 Dec 2004, Brent Goran wrote:> My question is - (not knowing much about IAX2) - when IAX2 transmits > DTMF as non-audio data - is it also using RFC2833 and/or INFO, or it it > using some other IAX2-specific mechanism with its own name?Yep - IAX's protocol is quite different from SIP/RTP. Steve