(Continuation of Q.13/16)

Background and justification

ITU-T Study Group 16 has created in H.323 a widely-used system of protocols for MM conferencing and video/Internet telephony over packet networks, including the Internet and LANs. This work is ongoing, and currently focuses on mobility, interactions with SIS/IN, and stimulus-based call signalling in H.323 combined with network control of terminating call services.

Study Items

This question will cover ongoing work in:

1) H.323;

2) H.225.0;

3) H.450.x;

4) H.332.

Other items to be covered include:

• Alignment with goals related to Mediacom 2004, IP, GII.
• Operation of H.323 systems over all kind of physical layers (cable, xDSL, mobile, etc.).
• Negotiation for optimal transport mechanisms, such as H.223 or H.323 Annex C.
• Operation in the same fashion in both public and private networks.
• Support of Accessibility.
• System robustness.
• Possibility of new multimedia terminal system for all networks.

Specific task objectives with expected time-frame of completion

To be completed.

Relationships

• All framework questions in SG 16 on high rate systems.
• IETF for Internet matters.
• ATM Forum and SG 11 for ATM QoS.
• SG 16 on Mediacom 2004 Project.
• SG 13 on IP and GII Projects.
• IMTC for interoperability.
• TIPHON on requirements and architecture.
• TIA.
• Audio/Video questions B, C, and D.
• SG 15 for xDSL.