SIST EN 300 256 V1.3.1:2005

• Abstract:

  The present version contains: - some correction of Errata, - the ASN.1 migration, and - the new procedure of delayed sending of DiversionLeg1.

• 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 300 256 V1.3.1 (2004-01) - Private Integrated Services Network (PISN); Specification, functional models and information flows; Call diversion supplementary service [ISO/IEC 13872 (2003), modified]

SIST EN 300 256 V1.3.1:2005 is the Slovenian adoption of ETSI EN 300 256 V1.3.1, a European standard for Private Integrated Services Network (PISN) call diversion supplementary service. It specifies the functional models and information flows for Call Forwarding Unconditional (SS-CFU), Call Forwarding Busy (SS-CFB), Call Forwarding No Reply (SS-CFNR), and Call Deflection (SS-CD) for people designing, implementing, or checking PISN services and signalling.

What does SIST EN 300 256 V1.3.1:2005 specify?

SIST EN 300 256 V1.3.1:2005 specifies the call diversion supplementary service for PISN and endorses ISO/IEC 13872 (2003) with ETSI modifications. In practice, it tells implementers which service behaviours and information flows belong to the four call diversion variants used in PISN environments.

The document is organized as an endorsed European Standard for telecommunications. The foreword identifies the service scope, and clause 3 is the main place where the ETSI-specific reference changes are applied.

What are the key requirements of SIST EN 300 256 V1.3.1:2005?

The standard’s main technical content is the definition of four call diversion supplementary services for PISN:

• SS-CFU - Call Forwarding Unconditional
• SS-CFB - Call Forwarding Busy
• SS-CFNR - Call Forwarding No Reply
• SS-CD - Call Deflection

For a network designer or service implementer, this means the document is about how these four services are modelled and how their signalling information is exchanged.

Clause 3 replaces the reference-handling text so that the document clearly distinguishes between specific and non-specific references. A specific reference stays fixed to the cited edition, while a non-specific reference uses the latest version. That matters when checking conformance, because it controls which external document version applies.

Clause 3 also adds ETSI normative references at the end of the reference list. These include ETSI EN 300 189 for addressing, ETSI EN 300 171 for circuit-mode 64 kbit/s bearer services, ETSI ETS 300 475-1 for PTNX reference configuration, ETSI EN 300 237 for name identification supplementary services, and ETSI ETS 300 173 for identification supplementary services. In practice, the call diversion service is not standalone - it depends on these related PISN building blocks.

Across the text, the standard replaces ISO/IEC source references with the corresponding ETSI references. That helps a reader trace which companion standards to use when implementing the service in an ETSI PISN context.

The present version also includes three stated updates: corrections of Errata, ASN.1 migration, and a new procedure for delayed sending of DiversionLeg1. For implementers, this is the part to check if they are updating an earlier implementation or test suite.

The standard also changes the wording “this International Standard” to “the present document”. That is an editorial change, but it matters when reading clauses and references inside the ETSI edition.

What terms does SIST EN 300 256 V1.3.1:2005 define?

• PISN - Private Integrated Services Network, the network type for which the call diversion service is specified.
• ISDN - Integrated Services Digital Network, the concept base used by the PISN series.
• OSI - Open Systems Interconnection, the framework that the series conforms to.
• SS-CFU - Call Forwarding Unconditional, a diversion service that forwards calls without a busy or no-reply condition.
• SS-CFB - Call Forwarding Busy, a diversion service used when the called party is busy.
• SS-CFNR - Call Forwarding No Reply, a diversion service used when a call is not answered.
• SS-CD - Call Deflection, a diversion service that redirects a call to another destination.

Who uses SIST EN 300 256 V1.3.1:2005?

SIST EN 300 256 V1.3.1:2005 is used by telecommunications engineers, PISN equipment vendors, signalling protocol designers, and test or conformance teams working on call diversion features. Quality managers and buyers use it to check whether a PISN service implementation covers the right forwarding and deflection functions and uses the expected ETSI companion standards.

What changed in SIST EN 300 256 V1.3.1:2005 from the previous edition?

The version states that it contains corrections of Errata, ASN.1 migration, and a new procedure for delayed sending of DiversionLeg1. The publication history also shows earlier editions as ETS 300 256 in 1993 and 1996 before the V1.3.1 publication path.

Which standards are used with SIST EN 300 256 V1.3.1:2005?

• ETSI EN 300 189 - provides PISN addressing, used when a diverted call must be routed correctly.
• ETSI EN 300 171 - provides the circuit-mode 64 kbit/s bearer service description and functional information.
• ETSI ETS 300 475-1 - provides the PTNX reference configuration used as the network reference point.
• ETSI EN 300 237 - provides name identification supplementary services, which relate to identifying call parties.
• ETSI ETS 300 173 - provides identification supplementary services used alongside call diversion.

These references are named in clause 3 and are part of the technical context needed to implement or verify the service.

What does the SIST EN 300 256 V1.3.1:2005 document contain?

The document contains the ETSI foreword, intellectual property rights notice, national transposition dates, endorsement notice, and a clause 3 change list. It also includes a reference replacement table that maps ISO/IEC references to the corresponding ETSI documents.

For practical use, the document shows how the service standard is aligned to ETSI references and records the publication history of the standard family. That makes it useful both for implementation work and for checking which edition is being applied.

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Zasebno omrežje z integriranimi storitvami (PISN) - Specifikacija, funkcijski modeli in informacijski pretoki - Dopolnilna storitev: izsmeritev klica [ISO/IEC 13872 (2003), spremenjen]Private Integrated Services Network (PISN); Specification, functional models and information flows; Call diversion supplementary service [ISO/IEC 13872 (2003), modified]33.040.35Telefonska omrežjaTelephone networksICS:Ta slovenski standard je istoveten z:EN 300 256 Version 1.3.1SIST EN 300 256 V1.3.1:2005en01-marec-2005SIST EN 300 256 V1.3.1:2005SLOVENSKI
STANDARD
ETSI ETSI EN 300 256 V1.3.1 (2004-01) 2
Reference REN/ECMA-00224 Keywords CDIV, endorsement, PISN, stage 1, stage 2, supplementary service 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 300 256 V1.3.1:2005

ETSI ETSI EN 300 256 V1.3.1 (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 ar
...