Liaison statement
LS on the new work item Q.DC-SA-Ms “Media session protocols for interfaces on converged media function for data channel enhanced IMS network”

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State Posted
Submitted Date 2026-01-19
From Group ITU-T-SG-11
From Contact tsbsg11@itu.int
To Group WIT
To Contacts Gorry Fairhurst <gorry@erg.abdn.ac.uk>
Mike Bishop <mbishop@evequefou.be>
Cc Mike Bishop <mbishop@evequefou.be>
The IETF Chair <chair@ietf.org>
Gorry Fairhurst <gorry@erg.abdn.ac.uk>
Scott Mansfield <Scott.Mansfield@Ericsson.com>
Response Contact tejpal.singh70@gov.in
baixueqian@chinamobile.com
licheng@caict.ac.cn
Technical Contact tejpal.singh70@gov.in
Purpose For information
Attachments Draft new Recommendation ITU-T Q.DC-SA-Ms
Body 
NOTE:  This liaison was sent to RTCWEB WG, which closed in 2024.  An email has
been sent back to the ITU-T SG11 TSB indicating that RTCWEB has closed.

Incoming Liaison Text:

ITU-T Study Group 11 would like to inform ITU-T Study Group 13 and IETF RTCWEB
WG on the creation of the new work item Q.DC-SA-Ms “Media session protocols for
interfaces on converged media function for data channel enhanced IMS network”.

As ITU-T Q.3648 provides the basic signalling architecture for data channel
enhanced IMS network, and Converged Media Function (CMF) is one of the most
important key functions of Q.3648, Q.DC-SA-Ms will analyze the interfaces,
signalling procedures and signalling messages related to CMF. This draft
Recommendation will build on and align with ITU-T Q.3648, ITU-T Y.3104 and IETF
RFC8831. ITU-T Q2/11 would like to thank you for your attention on this topic.