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
Abstract
The electronic version of this International Standard can be downloaded from the ISO/IEC Information Technology Task Force (ITTF) web site.
ISO/IEC 21889:2001 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.
ISO/IEC 21889:2001 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.
Look inside
Additional information
| Publication type | International Standard |
|---|---|
| Publication date | 2001-09-06 |
| Edition | 1.0 |
| Available language(s) | English |
| TC/SC | ISO/IEC JTC 1/SC 6 - Telecommunications and information exchange between systemsrss |
| ICS | 33.040.35 - Telephone networks |
| Pages | 39 |
| File size | 471 KB |
The following test report forms are related:
Share your publications
Learn how to share your publications with your colleagues, using networking options.
Payment information
Our prices are in Swiss francs (CHF). We accept all major credit cards (American Express, Mastercard and Visa, JCB and CUP), PayPal and bank transfers as form of payment.
Keep in touch
Keep up to date with new publication releases and announcements with our free IEC Just Published email newsletter.
Contact customer services
Please send your enquiry by email or call us on +41 22 919 02 11 between 09:00 – 16:00 CET Monday to Friday.