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 Thursday, May 12, 2005

The NGN Focus Group has delivered its first output for inclusion in the first set of specifications for next generation networks (NGN) - Release 1. The document (a supplement to ITU-T's Q series recommendations, approved at the last Study Group 11 meeting) relates to IP-QoS signalling.

QoS signalling provides a way for network elements to communicate with, or signal, other elements to request special handling of certain traffic. QoS signalling is useful for coordinating the traffic handling techniques provided by other QoS features. It plays a key role in configuring successful end-to-end QoS service across a network.

In this case the document - a technical report - identifies the requirements for signalling information regarding IP-based QoS at the interface between the user and the network (UNI) and across interfaces between different networks (NNI) including access networks.

Identifying these requirements and the signalling information elements will enable the development of signalling protocols which are essential for the development of services based on IP-QoS in NGN.