SIST EN 300 261 V1.3.1:2005

• Abstract:

  Endorsement of the latest version of ISO.

• 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 300 261 V1.3.1 (2004-01) - Private Integrated Services Network (PISN); Inter-exchange signalling protocol; Call transfer supplementary service [ISO/IEC 13869 (2003), modified]

SIST EN 300 261 V1.3.1:2005 is the Slovenian adoption of ETSI EN 300 261 V1.3.1, which endorses ISO/IEC 13869 (2003) for Private Integrated Services Network (PISN) call transfer signalling. It specifies the inter-exchange signalling protocol used at the Q reference point to support the Call Transfer supplementary service. In practice, it is the reference for designers, integrators, and testers of PISN and QSIG-based private telephony systems.

What does SIST EN 300 261 V1.3.1:2005 specify?

SIST EN 300 261 V1.3.1:2005 is an ETSI European Standard that applies the elements of ISO/IEC 13869 (2003) with European modifications. The foreword places it in a series of standards for PISN services and signalling protocols, based on Integrated Services Digital Network (ISDN) concepts and aligned with the Open Systems Interconnection (OSI) framework.

The document is organized as an endorsement notice for the ISO text, followed by specific changes to references and wording. The published material also includes administrative front matter and the document history.

What are the key requirements of SIST EN 300 261 V1.3.1:2005?

The standard’s main technical role is to define the signalling protocol at the Q reference point for the Call Transfer supplementary service. For implementers, that means the protocol behaviour for transferring calls in a PISN has to match the specified inter-exchange signalling rules so that different systems can work together.

Protocol scope and place in the PISN family

SIST EN 300 261 V1.3.1:2005 says the protocol forms part of PSS1, informally known as QSIG. That matters because call transfer is not defined as a standalone feature - it is part of a broader private-network signalling family used between exchanges.

How the ETSI version modifies ISO/IEC 13869

The endorsement notice states that ISO/IEC 13869 (2003) applies with modifications. Clause 3 is replaced so that reference handling is explicit: specific references stay fixed to the cited edition, while non-specific references follow the latest version. For users, this tells them how to treat updates in referenced standards.

Clause 3 also adds ETSI normative references and replaces ISO/IEC references throughout the text with the corresponding ETSI standards. In practice, this is what makes the European version self-consistent for implementation and conformance work.

Document wording and terminology

The ETSI text replaces the phrase "this International Standard" with "the present document". That change is editorial, but it matters when citing requirements because it makes the European text the active reference document.

What implementers should pay attention to

The standard ties call transfer to several related PISN standards on addressing, circuit-mode basic services, bearer services, reference configuration, generic supplementary-service protocol support, and related supplementary services. That means a working implementation normally needs to fit into the wider PISN/QSIG signalling environment, not just the transfer procedure itself.

What terms does SIST EN 300 261 V1.3.1:2005 define?

• Private Integrated Services Network (PISN) - A private network for integrated services, used here as the service environment for the signalling protocol.
• Q reference point - The interconnection point where the signalling protocol is applied between exchanges.
• Call Transfer supplementary service - The supplementary service that supports transferring an active call to another destination.
• PSS1 - The protocol family that this document belongs to for inter-exchange signalling in PISN.
• QSIG - The informal name used for the PSS1 protocol family.
• Integrated Services Digital Network (ISDN) - The concept base used by the PISN standards series.
• Open Systems Interconnection (OSI) - The framework the series says it conforms to.

Who uses SIST EN 300 261 V1.3.1:2005?

Telecommunications equipment vendors use this standard when implementing signalling for private branch exchange and private network products. Network designers and system integrators use it when connecting PISN exchanges so that call transfer works across vendor boundaries.

Test laboratories and interoperability teams use it to check that QSIG/PSS1 behaviour matches the specified call transfer signalling. Quality and engineering teams in enterprise telephony and private telecom networks use it as the reference for design reviews, acceptance tests, and protocol validation.

What changed in SIST EN 300 261 V1.3.1:2005 from the previous edition?

This publication is the ETSI EN 300 261 V1.3.1 version published in January 2004 and based on ISO/IEC 13869 (2003). The endorsement notice states that the ETSI edition applies modifications to the ISO text, especially the replacement of references in clause 3 and the substitution of several ISO/IEC references with ETSI standards throughout the document.

Which standards are used with SIST EN 300 261 V1.3.1:2005?

Standard	What it contributes
ETSI EN 300 189	Addressing for PISN
ETSI EN 300 172	Circuit-mode basic services signalling
ETSI EN 300 171	Circuit-mode 64 kbit/s bearer services
ETSI ETS 300 475-1	Reference configuration for PTN eXchanges
ETSI EN 300 239	Generic functional protocol for supplementary services
ETSI EN 300 260	Call transfer supplementary service specification
ETSI EN 300 238	Name identification supplementary service
ETSI EN 300 257	Call diversion supplementary service
ETSI EN 300 259	Path replacement ANF

These are the standards named in the ETSI modifications to clause 3 and in the reference-replacement table.

What does the SIST EN 300 261 V1.3.1:2005 document contain?

The document contains the endorsement notice for ISO/IEC 13869 (2003), the modified reference clause, and the table that maps ISO/IEC references to ETSI references. It also includes the foreword, national transposition dates, copyright and IPR notices, and the publication history.

For technical use, the most important part is the replacement of references and wording that adapts the international standard to the ETSI/PISN environment. For administrative use, the history shows the evolution of the ETS 300 261 publication line leading to V1.3.1.

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Zasebno omrežje z integriranimi storitvami (PISN) - Medcentralni signalizacijski protokol - Dopolnilna storitev: predaja klica [ISO/IEC 13869 (2003), spremenjen]Private Integrated Services Network (PISN); Inter-exchange signalling protocol; Call transfer supplementary service [ISO/IEC 13869 (2003), modified]33.040.35Telefonska omrežjaTelephone networksICS:Ta slovenski standard je istoveten z:EN 300 261 Version 1.3.1SIST EN 300 261 V1.3.1:2005en01-marec-2005SIST EN 300 261 V1.3.1:2005SLOVENSKI
STANDARD
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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 fram
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