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Question 3/15 - Support for Recommendations Specifying Systems Based on ISDN Physical Layers

(Extracted from Questions 11/13 and 12/13)

Background and justification

For the successful continuation and implementation of B-ISDN services, refinement and enhancement to B-ISDN Layer 1 specifications may be needed considering the market demands of the maturity, variety and economy of the interfaces. Close interaction with experts on NNI Recommendation G.707 is necessary for the continuing harmonization of B-ISDN Recommendations to ensure full compatibility of implementations.

Maintenance of Recommendations for 64 kbit/s ISDN interfaces (Recommendations I.430, I.431 and G.961) will also be considered if required.

Items for study

  1. Consideration of the necessary refinements and enhancements to the existing B-ISDN user-network interface (UNI) Recommendations (I.432 series)
  2. Consideration of the necessary refinements and enhancements to the existing B-ISDN service node interface (SNI) Recommendations G.967.1, G.967.2 and G.967.3.
  3. Consideration of the necessary refinements and enhancements to the existing ISDN service node interface (SNI) Recommendations G.964 and G.965.
  4. Revision of Recommendation I.414 (Overview of Access Recommendations) as necessary to incorporate VB5 interface, and other recent new Recommendations in the area of access.
  5. Maintenance of the existing ISDN Layer 1 Recommendations I.430, I.431, G.960, G.961, G.962, G.963 (if required).

Tasks with deadlines

  • Update I.414 by 2001
  • Update I.430, I.431, I.432 series (if required)
  • Update G.964, G.965 and G.967.x series by 2001

Relationships

  • ITU-T Study Groups on maintenance specifications
  • ITU-T Study Groups on access network architecture
  • ISO and IEC on connector and cabling specifications of interfaces
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    Updated : 2004-10-21