SIST EN 301 919 V1.1.1:2005

• Abstract:

  Single Step Call Transfer is a service which enables a User, user A, to transform existing call between user A and user B into a new call between user B and user C whereby user A does not have a call established with user C prior to call transfer. IS endorsement.

• 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 301 919 V1.1.1 (2004-01) - Private Integrated Services Network (PISN); Inter-exchange signalling protocol; Single step call transfer supplementary service [ISO/IEC 19460 (2003), modified]

Overview

SIST EN 301 919 V1.1.1:2005 defines the inter-exchange signalling protocol for the Private Integrated Services Network (PISN) to support the single step call transfer supplementary service. Developed by SIST and based on the modified ISO/IEC 19460:2003 standard, this document specifies how a user (user A) can transfer an active call with user B to a third party (user C), even if user A does not have a call established with user C before initiating the transfer. This functionality enhances the flexibility and efficiency of private telecommunication networks by enabling seamless call management across PISN nodes.

This standard forms part of the broader PSS1 protocol suite, commonly known as QSIG, which is a widely recognized protocol for signalling in PISN environments. The QSIG protocol ensures interoperability and standardized communication between exchanges within private networks using ISDN (Integrated Services Digital Network) principles.

Key Topics

• Single Step Call Transfer: Specifies the procedure and signalling requirements for transferring a call in a single action. User A can actively connect user B and user C and then drop out of the call, streamlining business communications.
• Inter-exchange Signalling Protocol: Details the protocol used at the "Q reference point" between two PISN exchanges (PINXs), ensuring interoperability for supplementary services.
• PSS1 (QSIG) Supplementary Service: The standard belongs to the suite of PSS1 protocols, supporting advanced features like call transfer, call diversion, advice of charge, and name identification within private networks.
• Reference Model: Conforms to the OSI (Open Systems Interconnection) and ISDN architectural models as developed by ITU-T and described in ISO/IEC standards.
• Compatibility and Endorsement: Endorses and modifies ISO/IEC 19460, includes updates and references to related ETSI and ISO/IEC standards for addressing, basic call, call diversion, and other supplementary services.

Applications

The practical value of SIST EN 301 919 V1.1.1:2005 is in its wide application within corporate and organizational telecommunication infrastructures:

• Enterprise PBX Systems: Enables businesses with a Private Integrated Services Network to offer efficient call transfer capabilities, reducing manual intervention and allowing employees to quickly redirect calls.
• Interconnected Office Branches: Facilitates seamless call routing and management between offices connected by PISNs, improving internal communications.
• Customer Service Centers: Enhances customer experience by allowing operators to transfer calls to the appropriate expert without dropping or redialing.
• ISDN-based Environments: Provides support for organizations transitioning to or maintaining ISDN-based backbone networks, offering robust supplementary services.

These applications are essential for organizations seeking reliable, scalable, and standard-conformant telephony services.

Related Standards

To ensure comprehensive support for PISN environments, this standard references and works in conjunction with other key standards:

• EN 300 189: PISN Addressing [ISO/IEC 11571, modified]
• EN 300 172: Circuit-mode Basic Services [ISO/IEC 11572, modified]
• EN 300 171: Bearer Services Information Flows [ISO/IEC 11574, modified]
• EN 300 239: Generic Functional Protocol for Supplementary Services [ISO/IEC 11582, modified]
• EN 300 238: Name Identification Supplementary Service [ISO/IEC 13868, modified]
• EN 300 261: Call Transfer Supplementary Service [ISO/IEC 13869, modified]
• EN 300 171/EN 301 918: Specification and information flows for single step call transfer [ISO/IEC 19459, modified]

For full interoperability and feature coverage in private telephone networks, adherence to these related standards is recommended.

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Keywords: Private Integrated Services Network, PISN, single step call transfer, supplementary service, QSIG, inter-exchange signalling protocol, ISDN, ETSI, EN 301 919, ISO/IEC 19460.

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: enostavna predaja klica [ISO/IEC 19460 (2003), spremenjen]Private Integrated Services Network (PISN); Inter-exchange signalling protocol; Single step call transfer supplementary service [ISO/IEC 19460 (2003), modified]33.040.35Telefonska omrežjaTelephone networksICS:Ta slovenski standard je istoveten z:EN 301 919 Version 1.1.1SIST EN 301 919 V1.1.1:2005en01-marec-2005SIST EN 301 919 V1.1.1:2005SLOVENSKI
STANDARD
ETSI ETSI EN 301 919 V1.1.1 (2004-01) 2
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ETSI ETSI EN 301 919 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 Transfer supplementary service. 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 19460.
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 endorseme
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