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

Abstract Preview

This International Standard specifies the signalling protocol for the support of the Call Identification and Call Linkage

Additional Network Feature (ANF-CIDL) at the Q reference point between Private Integrated Network Services Exchanges

(PINXs) connected together within a Private Integrated Services Network (PISN).

ANF-CIDL is an additional network feature which allows the assignment of a Global Call Identification (GID) to identify a

call end-to-end over the call route (i.e. between the two end PINXs). As an option, a Thread Identification (TID) may be

assigned to different calls which are logically linked together due to the operation of other supplementary services and/or

ANFs. Additionally a Leg Identification (LID) may be assigned, to identify the different legs of a call.

NOTE 1 - This ANF has been developed to support the use of CSTA (ISO/IEC 18051) in a networked environment, i.e. in a PISN. Use of

this ANF for other applications is not precluded.

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

Supplementary 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 ISO/IEC 21888.

The signalling protocol for ANF-CIDL operates on top of the signalling protocol for basic circuit switched call control, as

specified in ISO/IEC 11572, and uses certain aspects of the generic procedures for the control of supplementary services

specified in ISO/IEC 11582.

This International Standard also specifies additional signalling protocol requirements for the support of interactions at the Q

reference point between Call Identification and Call Linkage and other supplementary services and ANFs.

This International Standard is applicable to PINXs which can be interconnected to form a PISN.


General information

  • Status :  Published
    Publication date : 2001-09
  • Edition : 1
    Number of pages : 39
  • :
    ISO/IEC JTC 1/SC 6
    Telecommunications and information exchange between systems
  • 33.040.35
    Telephone networks

Buy this standard

Format Language
Paper
  • CHF158

Got a question?

Check out our FAQs

Customer care
+41 22 749 08 88

Opening hours:
Monday to Friday - 09:00-12:00, 14:00-17:00 (UTC+1)

Keep up to date with ISO

Sign up to our newsletter for the latest news, views and product information.