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Background and justification

The widespread expansion of IP-based services, and the rapid change from a circuit-based network infrastructure to one that is packet-based, have created many performance and service quality issues. Within the ITU-T, the many aspects of Quality-of-Service (QoS) being addressed are in need global co-ordination. This Question is necessary to provide this co-ordination and to assure consistency among the various ITU-T Study Groups, as well as from other related bodies such as the IETF. This global co-ordination will be conducted by Study Group 12 as the Lead Study Group on QoS.

Study Items

The QoS co-ordination activities are focused on:

• Co-ordination of the studies carried out within ITU-T on QoS.
• Harmonisation among the various Recommendations and standards on QoS.
• Co-ordination of critical IP-related QoS issues across the industry, in co-operation with bodies such as the IETF, as appropriate.

Specific tasks and deliverables

• Leading role for coordination of QoS-related activities in the ITU-T (ongoing).
• Coordination among various standards activities on QoS and collaboration with other standards bodies (ongoing).
• Publish reports and make recommendations to TSAG and the TSB, as needed.

Relationships

• ITU-T Study Groups with any activities related to QOS.
• Liaison with other organizations involved in QoS-related activities, examples of which are the IETF, ATM Forum, ETSI, T1, etc.