International Standard
ISO/IEC 21889:2001
Information technology — Telecommunications and information exchange between systems — Private Integrated Services Network — Inter-exchange signalling protocol — Call Identification and Call Linkage Additional Network Feature
Reference number
ISO/IEC 21889:2001
Edición 1
2001-09
International Standard
Vista previa
ISO/IEC 21889:2001
34765
No disponible en español
Publicado (Edición 1, 2001)
Esta norma se revisó y confirmó por última vez en 2006. Por lo tanto, esta versión es la actual.

ISO/IEC 21889:2001

ISO/IEC 21889:2001
34765
Idioma
Formato
CHF 173
Convertir Franco suizo (CHF) a tu moneda
The electronic version of this International Standard can be downloaded from the ISO/IEC Information Technology Task Force (ITTF) web site

Resumen

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.

Informaciones generales

  •  : Publicado
     : 2001-09
    : Norma Internacional confirmada [90.93]
  •  : 1
     : 39
  • ISO/IEC JTC 1/SC 6
    33.040.35 
  • RSS actualizaciones

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)