International Standard
ISO/IEC 11572:2000
Information technology — Telecommunications and information exchange between systems — Private Integrated Services Network — Circuit mode bearer services — Inter-exchange signalling procedures and protocol
Reference number
ISO/IEC 11572:2000
Edition 3
International Standard
Read sample
ISO/IEC 11572:2000
Published (Edition 3, 2000)
This standard was last reviewed and confirmed in 2011. Therefore this version remains current.

ISO/IEC 11572:2000

ISO/IEC 11572:2000
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The electronic version of this International Standard can be downloaded from the ISO/IEC Information Technology Task Force (ITTF) web site


This International Standard defines the signalling procedures and protocol for the purpose of circuit-switched Call Control at

the Q-reference point between Private Integrated Network Exchanges (PINXs) connected together within a Private Integrated

Services Network (PISN).

The Q reference point is defined in ISO/IEC 11579-1.

This International Standard is based upon that described in ITU-T Recommendation Q.931, including the provisions for

symmetrical operation described in annex D of that recommendation.

Service specifications are produced in three stages and according to the method specified in ETS 300 387. This International

Standard contains the stage 3 specification for the Q reference point and satisfies the requirements identified by the stage 1 and

stage 2 specifications in ECMA-142, ECMA-148 and ISO/IEC 11584.

This International Standard is applicable to PINXs which interconnect to form a PISN.

Annex ZC is an integral part of this International Standard.

General information

  •  : Published
     : 2000-03
    : Close of review [90.60]
  •  : 3
     : 137
  • ISO/IEC JTC 1/SC 6
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