2.3.1.1 SIP OPTIONS message extension to support capability discovery
The RCS (Release 1 and 2) specifications only provide a mechanism to exchange
the
capability status (based on a SIP OPTIONS exchange) related to the image and
video
share services during a call. This mechanism is based on the use of tags
transported in the
Accept-contact and Contact headers for the SIP OPTIONS and its responses:
• The tags corresponding to the set of functionalities supported by the
requesting terminal
at the time this request is made are carried in both the Contact and
Accept-contact
headers of the SIP OPTIONS message.
• The tags corresponding to the subset of the functionalities that are
supported by the
receiver are included in the Contact header of the 200 OK response.
Original issue reported on code.google.com by jmauffret@gmail.com on 30 Jul 2013 at 9:29
Original issue reported on code.google.com by
jmauffret@gmail.com
on 30 Jul 2013 at 9:29