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ITU 150

Question 8/11

Question 8/11 – Guidelines for implementations of signalling requirements and protocols
(Continuation of Question 6/11)


Networks and protocols in packet-based networks are evolving. Progress achieved by various international standardization bodies has led to the emergence of different solutions to address convergence and interoperability.
Many developing countries have expressed their needs for assistance in understanding how the various ITU‑T recommendations can be used. Guidelines are needed to assist ITU Members in deciding on deployment strategies in relation to new networks and services.
Cooperation among ITU‑T study groups, between ITU‑T and ITU‑D as well as with external bodies outside the ITU (in particular with SDOs), is required to gather a complete information to deliver valuable guidelines. Coordination among relevant organizations is also necessary to fulfil these tasks.
Study items to be considered include, but are not limited to:
  • What activity is needed in the ITU‑T Sector to prepare common guidelines by the ITU‑T and ITU‑D Sectors, containing different aspects related to technical matters, in particular to compare approaches to network testing and benchmarking?
  • What should be taken into account to assure adequate security in the deployment of packet-based networks?
  • 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.?
  • What should be taken into account to provide energy savings, directly or indirectly, in information and communication technologies (ICTs) or in other industries?
Tasks include, but are not limited to:
  • identify network interconnection scenarios;
  • coordinate ITU‑T Sector inputs to produce guidelines in cooperation with the ITU‑D Sector, that would include (the inputs shall include any technical aspects as prepared by the relevant study groups):
  • identification of protocols consistent with the existing and new service requirements of administrations/operators, for migration from circuit switched networks to packet based networks in the evolution towards NGN/SUN;
  • degree of interoperability for services between networks employing different protocols;
  • generic guidelines covering aspects of network testing and monitoring,
  • generic guidelines for approaches to networks and services benchmarking including approaches of QoS/QoE monitoring system development.
  • prepare the technical guidelines on the signalling requirements and protocol aspects of packet-based networks to support PSTN/ISDN services and their evolution to NGN/SUN.
An up-to-date status of work under this Question is contained in the SG 11 work programme
  • As required
  • All Questions of SG 11, especially Questions relating to control, signalling architectures and protocols
Study groups
  • ITU‑T SG 2 on operational aspects of service provisioning and telecommunication management
  • ITU‑T SG 12 on network QoS and performance aspects
  • ITU‑T SG 13 on principles, requirements, frameworks and architectures for an overall heterogeneous network environment
  • ITU‑T SG 16 on multimedia architecture, data networks and telecommunication software aspects
  • ITU‑D SG 2
Standardization bodies
  • Asia-Pacific Telecommunity Standardization Program (ASTAP), CITEL, ETSI, IETF and similar organizations