SIST EN 301 923 V1.1.1:2005

• Abstract:

  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 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 may be assigned, to identify the different legs of a call. This ANF has been developed to support the use of CSTA (ECMA-269) in a networked environment, i.e. in a PISN. Use of this ANF for other applications is not precluded.

• Status: Published
• Publication Date: 28-Feb-2005
• ICS: 33.040.35 - Telephone networks
• Technical Committee: SPN - Services and Protocols for Networks
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Mar-2005
• Due Date: 01-Mar-2005
• Completion Date: 01-Mar-2005
• Ref Project: ETSI EN 301 923 V1.1.1 (2004-01) - Private Integrated Services Network (PISN); Inter-exchange signalling protocol; Call identification and call linkage Additional Network Feature (ANF) [ISO/IEC 21889 (2001), modified]

SIST EN 301 923 V1.1.1:2005 is the Slovene adoption of ETSI EN 301 923 V1.1.1, a European Telecommunications Standard for Private Integrated Services Network (PISN) inter-exchange signalling. It specifies the Call identification and call linkage Additional Network Feature (ANF-CIDL), including how a Global Call Identification (GID), Thread Identification and Leg Identification are used to track and relate calls end to end in a PISN. The standard was developed to support CSTA (ECMA-269) in a networked PISN environment.

What does SIST EN 301 923 V1.1.1:2005 specify?

SIST EN 301 923 V1.1.1:2005 specifies the signalling protocol at the Q reference point for ANF-CIDL in PISN. It is part of the PSS1 protocol, informally known as QSIG, and it endorses ISO/IEC 21889 (2001) with ETSI modifications.

In practical terms, the standard tells implementers how call identification and call linkage are carried over inter-exchange signalling so that the same call can be recognized across the route between the two end PINXs. The scope also states that use of ANF-CIDL for other applications is not precluded.

The page shows the document as a European Standard (Telecommunications series) with front matter, an endorsement notice, clause 3 on references, and a history note.

What are the key requirements of SIST EN 301 923 V1.1.1:2005?

• ANF-CIDL assigns a Global Call Identification (GID) to a call end to end over the call route, between the two end PINXs. In practice, this gives a single identifier that systems can use to follow one call across network nodes.

• As an option, the standard allows a Thread Identification for different calls that are logically linked by other supplementary services and/or ANFs. In practice, this lets equipment correlate related calls, for example when one call is transformed into several linked signaling events.

• The standard allows a Leg Identification to identify the different legs of a call. In practice, this helps when a call is split across exchanges or paths and each segment must be distinguished.

• The protocol is defined for the Q reference point and forms part of PSS1/QSIG. In practice, this tells vendors where the feature sits in the signalling architecture and which protocol family must carry it.

• The feature was developed to support CSTA (ECMA-269) in a networked PISN environment. In practice, this matters for computer-telephony integration, because applications can relate call events to one another across the network.

• The endorsement notice modifies the referenced text throughout by replacing ISO/IEC references with ETSI equivalents. In practice, implementers should follow the ETSI-referenced companion standards named in the document, not the original ISO/IEC reference list.

• Clause 3 adds normative references that frame the protocol with PISN addressing, basic services, bearer services, reference configuration, and related supplementary-service signalling. In practice, these references define the surrounding network behavior that the ANF-CIDL protocol relies on.

What terms does SIST EN 301 923 V1.1.1:2005 define?

• Private Integrated Services Network (PISN) - the private network environment for which the signalling protocol is specified.
• Additional Network Feature (ANF) - a network feature added to the base services; here it is the call identification and call linkage feature.
• ANF-CIDL - the specific ANF covered by the standard, used for call identification and call linkage.
• Global Call Identification (GID) - the identifier used to recognize one call end to end across the route.
• Thread Identification - an optional identifier for calls that are logically linked to each other.
• Leg Identification - an identifier for the different legs of a call.
• CSTA - the computer-telephony application context that the feature was developed to support in a networked environment.
• Q reference point - the signalling interface where the protocol is applied.

Who uses SIST EN 301 923 V1.1.1:2005?

SIST EN 301 923 V1.1.1:2005 is used by engineers and vendors working on PISN inter-exchange signalling, especially where QSIG/PSS1 features must carry call identity across network exchanges. It is also relevant to system integrators and testers who need to support CSTA (ECMA-269) in a PISN, and to buyers or quality managers checking interoperability requirements for call identification and call linkage functions.

What changed in SIST EN 301 923 V1.1.1:2005 from the previous edition?

SIST EN 301 923 V1.1.1:2005 endorses ISO/IEC 21889 (2001) and applies ETSI modifications to it. The changes stated in the document are:

• clause 3 is replaced with ETSI wording on references,
• additional normative references [29] to [49] are inserted,
• references throughout the text are replaced with ETSI standards,
• the phrase “this International Standard” is replaced by “the present document”.

Which standards are used with SIST EN 301 923 V1.1.1:2005?

Reference(s)	What they contribute
ETSI EN 300 189	Addressing for PISN
ETSI EN 300 172, ETSI EN 300 171, ETSI ETS 300 475-1	Basic services, bearer services, and PTN reference configuration used to place the signalling protocol in its network context
ETSI EN 300 239	Generic functional protocol for supplementary services
ETSI EN 300 261, EN 300 366, EN 300 257, EN 300 259, EN 300 362, EN 300 364, EN 300 426, EN 301 265	Related call supplementary services and ANFs that the protocol text references
ETSI EN 301 825, EN 301 827, EN 301 829, EN 301 656, EN 301 821, EN 301 810, EN 301 919	Wireless terminal, priority interruption, PUM, and single-step call transfer related signalling references
ETSI EN 301 922	Functional model and information flows for call identification and call linkage ANFs

What does the SIST EN 301 923 V1.1.1:2005 document contain?

SIST EN 301 923 V1.1.1:2005 contains the endorsement of ISO/IEC 21889 (2001), the modified clause on normative references, and a detailed replacement table that maps ISO/IEC references to ETSI references. It also includes the foreword, intellectual property rights notice, transposition dates, and document history. For a reader, the main practical value is that the document identifies the protocol context, the companion standards it depends on, and the exact ETSI wording to use when implementing or checking ANF-CIDL.

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Zasebno omrežje z integriranimi storitvami (PISN) - Medcentralni signalizacijski protokol - Dodatna omrežna lastnost (ANF): razpoznavanje klica in povezovanje klica [ISO/IEC 21889 (2001), spremenjen]Private Integrated Services Network (PISN); Inter-exchange signalling protocol; Call identification and call linkage Additional Network Feature (ANF) [ISO/IEC 21889 (2001), modified]33.040.35Telefonska omrežjaTelephone networksICS:Ta slovenski standard je istoveten z:EN 301 923 Version 1.1.1SIST EN 301 923 V1.1.1:2005en01-marec-2005SIST EN 301 923 V1.1.1:2005SLOVENSKI
STANDARD
ETSI ETSI EN 301 923 V1.1.1 (2004-01) 2
Reference DEN/ECMA-00203 Keywords ANF, endorsement, PISN, PSS1, QSIG, stage 3 ETSI 650 Route des Lucioles F-06921 Sophia Antipolis Cedex - FRANCE
Tel.: [phone]
Fax: [phone]
Siret N° 348 623 562 00017 - NAF 742 C Association à but non lucratif enregistrée à la Sous-Préfecture de Grasse (06) N° 7803/88
Important notice Individual copies of the present document can be downloaded from: http://www.etsi.org The present document may be made available in more than one electronic version or in print. In any case of existing or perceived difference in contents between such versions, the reference version is the Portable Document Format (PDF). In case of dispute, the reference shall be the printing on ETSI printers of the PDF version kept on a specific network drive within ETSI Secretariat. Users of the present document should be aware that the document may be subject to revision or change of status. Information on the current status of this and other ETSI documents is available at http://portal.etsi.org/tb/status/status.asp If you find errors in the present document, send your comment to: [e-mail] Copyright Notification No part may be reproduced except as authorized by written permission. The copyright and the foregoing restriction extend to reproduction in all media.
© European Telecommunications Standards Institute 2004. All rights reserved.
DECTTM, PLUGTESTSTM and UMTSTM are Trade Marks of ETSI registered for the benefit of its Members. TIPHONTM and the TIPHON logo are Trade Marks currently being registered by ETSI for the benefit of its Members. 3GPPTM is a Trade Mark of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners. SIST EN 301 923 V1.1.1:2005

ETSI ETSI EN 301 923 V1.1.1 (2004-01) 3
Intellectual Property Rights IPRs essential or potentially essential to the present document may have been declared to ETSI. The information pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web server (http://webapp.etsi.org/IPR/home.asp). Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web server) which are, or may be, or may become, essential to the present document. Foreword This European Standard (Telecommunications series) has been produced by ECMA on behalf of its members and those of the European Telecommunications Standards Institute (ETSI). The present document is one of a series of standards defining services and signalling protocols applicable to Private Integrated Services Networks (PISN). The series uses the Integrated Services Digital Network (ISDN) concepts as developed by ITU-T and conforms to the framework of standards for Open Systems Interconnection (OSI) as defined by ISO/IEC. The present document specifies the signalling protocol for use at the Q reference point in support of the Call Identification and Call Linkage Additional Network Feature. The protocol defined in the present document forms part of the PSS1 protocol (informally known as QSIG). The present document endorses an International Standard, ISO/IEC 21889.
National transposition dates Date of adoption of this EN: 19 December 2003 Date of latest announcement of this EN (doa): 31 March 2004 Date of latest publication of new National Standard or endorsement of this EN (dop/e):
30 September 2004 Date of withdrawal of any conflicting National Standard (dow): 30 September 2004
Endorsement notice The elements of International Standard ISO/IEC 21889 (2001) apply, with the following modifications. SIST EN 301 923 V1.1.1:2005

ETSI ETSI EN 301 923 V1.1.1 (2004-01) 4
Clause 3 Replace the first paragraph by: The following documents contain provisions which, through reference in this text, constitute provisions of the present document. • References are either specific (identified by date of publication and/or edition number or version number) or non-specific. • For a specific reference, subsequent revisions do not apply. • For a non-specific refer
...