A New Internet-Draft is available from the on-line Internet-Drafts directories.

Title           : Indication of features supported by proxy
Author(s)       : Christer Holmberg
                          Ivo Sedlacek
Filename        : draft-holmberg-sipcore-proxy-feature-03.txt
Pages           : 8
Date            : 2011-10-28

   The Session Initiation Protocol (SIP) "Caller Preferences" extension,
   defined in RFC 3840, provides a mechanism that allows a SIP message
   to convey information relating to the originator's features and
   capabilities.  This document defines a new SIP header field, Feature-
   Caps, that can be used by entities to indicate support of features
   and capabilities, in case they cannot use the Contact header field
   for that purpose.


A URL for this Internet-Draft is:
http://www.ietf.org/internet-drafts/draft-holmberg-sipcore-proxy-feature-03.txt

Internet-Drafts are also available by anonymous FTP at:
ftp://ftp.ietf.org/internet-drafts/

This Internet-Draft can be retrieved at:
ftp://ftp.ietf.org/internet-drafts/draft-holmberg-sipcore-proxy-feature-03.txt
_______________________________________________
I-D-Announce mailing list
I-D-Announce@ietf...
https://www.ietf.org/mailman/listinfo/i-d-announce
Internet-Draft directories: http://www.ietf.org/shadow.html
or ftp://ftp.ietf.org/ietf/1shadow-sites.txt