[SIPForum-discussion] Difference in DTMF payloads

Javier Dejo javierd at zyxel.com
Thu Dec 6 19:20:59 UTC 2007

I will take a look to it, but then a new question: Is it backwards compatible with RFC2833? Does a device that supports RFC4733 has to support 2833 for backwards compatibility, as a separated thing?






Javier E. Dejo


	Hi all,


	I’m a newbie to this list, and to SIP, and I have a question: What is the difference between DTMF event payload 100 and 101?


	Are them both RFC2833?

I don't have an answer to your question, but I would point out that RFC 2833 has been made obsolete by RFC 4733:


So that should be the reference used when looking at this way of doing DTMF over SIP. (i.e.  RFC 2833 should no longer be used)


Dan York, CISSP, Director of Emerging Communication Technology
Office of the CTO    Voxeo Corporation     dyork at voxeo.com
Phone: +1-407-455-5859  Skype: danyork  http://www.voxeo.com
Blogs: http://blogs.voxeo.com  http://www.disruptivetelephony.com
Bring your web applications to the phone.
Find out how at http://evolution.voxeo.com
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://sipforum.org/pipermail/discussion/attachments/20071206/e2fe60dd/attachment-0002.html>

More information about the discussion mailing list