>> Study Group 13 : Next Generation Networks
Question 7/13 - Network and service interworking in NGN environment
(Continuation of Question 5/13)
- Motivation
The work on layer 2 technologies such as ATM and Frame Relay has matured while IP-based applications
are gaining importance in the industry. The focus should now shift to interworking in the context of
NGN (Next Generation Networks). This rapid growth and the embedded base of legacy telecommunications
networks have necessitated a strategy of evolution towards integrated multi-service networks. Thus,
there is a need to continue to address items such as:
- consideration of IP and MPLS-based backbone networks and their interworking and interaction with traditional networks and associated services;
- consideration of extending Ethernet traffic through interworking with other networks;
- determination of how best to carry narrow-band and broadband services in a fully integrated IP-based network;
- consideration of non-IP based networks and their interworking;
- definition of protocol requirements and description for interworking of services that go beyond those provided by traditional networks.
Some of these items have already been initiated in SG 13 as well as in other ITU-T study groups and
standards bodies such as the IETF, the ATM Forum and the MPLS and Frame Relay Alliance. Due to the
substantial interest in this activity, similar work is in progress in the various fora. Hence, it
is crucial to have a high level of coordination between the different standards development organizations
in order to guarantee seamless end-to-end quality of service and operation of services for the benefit all
involved.
- Question
Study items to be considered include, but are not limited to:
- What enhancements to the existing Recommendations should be made to enable interworking between the legacy networks and the Next Generation Networks (NGN)?
- What new Recommendations are needed to facilitate migration of legacy networks to NGN?
- What new Recommendations should be developed to meet NGN requirements?
- What modifications to existing Recommendations are needed to allow better utilization of the network capabilities?
- What new Recommendations should be developed to facilitate greater interoperability between different networks?
- Tasks
Tasks include but are not limited to:
- Creation of, maintenance and enhancement to the Recommendations in Y.1400 series.
- Maintenance and enhancement to the Recommendations in I.500 series.
- Completion of draft Recommendations already under discussion in the Question.
- Development of new Recommendations related to the interworking aspects of NGN.
- Relationships
Recommendations: I- and Y-series
Questions: Q.2, 5, 11/13; 16 and 17/12; 22/15
Study Groups: ITU-T Study Groups 4, 9, 11, 12, 15, 17, 19
Standardisation bodies fora and consortia:
IETF working groups on topics of mutual interest
ATM Forum on topics of mutual interest
IEEE 802 LAN/MAN Standards Committee on Ethernet related activities
Metro Ethernet Forum (MEF) on Ethernet related activities
MPLS and Frame Relay Alliance on topics of mutual interest
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