>> Study Group 11 : Signalling requirements and protocols
Question 4/11 – Bearer control and signalling requirements and protocols
(Continuation of parts of Questions 8/11, 9/11, 11/11, 12/11 and whole Question 15/11 of 2001-2004)
- Motivation
Recommendations related to signalling and control of bearer technologies such as ATM and AAL2 have been created, maintained and enhanced. Specifications related to the signalling requirements and protocols for the support of ATM – MPLS network inter-working were completed as well as Recommendations concerned with the inter-working of AAL2 signalling and IP. Since there is major emphasis on the use of IP in the context of Next Generation Networks (NGN), there is an increasing need for inter-working between the existing transport services and IP or MPLS. This requires preparation of bearer signalling and control Recommendations related to IP, MPLS and other bearer technologies such as ATM, AAL2, FR, TDM and Ethernet.
Recommendations in force: Q.1970, Q.1990, Q.2630, Q.2761-2764, Q.2920, Q.2931 and Q.2932.1
- Question
Study items to be considered include, but are not limited to:
- What new Recommendations on bearer signalling and control are required to support Next Generation Networks (NGN)?
- What enhancements to the existing Recommendations on bearer signalling and control should be made to facilitate the evolution of the current networks to NGN?
- What new Recommendations on bearer signalling and control are needed to facilitate migration of legacy networks to NGN including those providing signalling for service and network interworking?
- What associated mechanisms are required to assure security of bearer signalling and control?
- What functional architecture and entities are required to support services and/or applications of public interest such as emergency call handling, lawful interception, number portability, etc.?
- Tasks
Tasks include, but are not limited to:
- Enhancement to the existing bearer control and signalling related Recommendations (e.g. IP, ATM, AAL2...).
- Development of new bearer control and signalling related Recommendations.
- Development of new Recommendations related to the service inter-working between ATM, AAL2, FR, TDM, Ethernet, MPLS and IP.
- Development of Recommendations to identify requirements needed for multi-services network and service inter-working with IP.
- Development of Protocol Implementation Conformance Statements (PICS) for selected protocols.
- Relationships
Recommendations: I.555, Q.1970, Q.1990, Q.263x and Q. 29XX series
Questions: Qs 1, 2, 3, 5 and 7/11; and Qs 4, 5 & 7/13
Study Groups:
ITU-T Study Group(s) responsible for user plane interworking aspects
ITU-T Study Group(s) responsible for performance aspects
ITU-T Study Group(s) responsible for Ethernet aspects
ITU-T Study Group(s) responsible for Security aspects
ITU-T Study Group(s) responsible for mobility aspects
Standardisation bodies, fora and consortia:
Organizations such as: IETF, ATM Forum, Metro Ethernet Forum, and MPLS & Frame Relay Alliance on topics of mutual interest
1 The word “service” in this context is not meant necessarily to represent an ITU-T-defined Service.
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