SIST EN 301 260 V1.2.1:2005

SIST EN 301 260 V1.2.1:2005 is the Slovenian standard published by SIST for the ETSI European Standard EN 301 260 V1.2.1 on Private Integrated Services Network (PISN) message waiting indication. It specifies the Message Waiting Indication supplementary service, including its functional model and information flows, for PISN systems that use ISDN concepts and the OSI framework. The document is an endorsement of ISO/IEC 15505 (2003) with ETSI modifications.

What does SIST EN 301 260 V1.2.1:2005 specify?

SIST EN 301 260 V1.2.1:2005 specifies the Message Waiting Indication supplementary service for Private Integrated Services Network (PISN). In practice, it tells network and equipment designers how the service is framed so that a user can be informed that a message is waiting.

The standard is part of a series for services and signalling protocols in PISN, and it is aligned with Integrated Services Digital Network (ISDN) concepts and the Open Systems Interconnection (OSI) framework. That matters because implementers need a service model that fits existing telecom signalling and network architecture.

The ETSI endorsement notice shows the document structure as a foreword, national transposition dates, an endorsement notice, clause 3 on normative references, reference substitutions throughout the text, and a document history. The scope statement also identifies it as an endorsement of ISO/IEC 15505 (2003).

What are the key requirements of SIST EN 301 260 V1.2.1:2005?

SIST EN 301 260 V1.2.1:2005 requires readers to treat ISO/IEC 15505 (2003) as the base text, with ETSI modifications applied. For users, that means the ETSI version is not a separate service definition from scratch, but an endorsed and adapted standard.

• The document specifies the Message Waiting Indication supplementary service for PISN. This is the central subject that implementers must support if they claim conformance to the service.
• The series uses ISDN concepts and conforms to the OSI framework. In practice, this tells architects which telecom model the service belongs to and how it fits into the wider network environment.
• Clause 3 defines how references are to be read. Specific references keep their cited edition, while non-specific references use the latest version; this affects which companion documents apply during design and testing.
• Clause 3 adds EN 300 171 and ETS 300 475-1 as normative references. These provide the bearer-service and PTNX reference-configuration context needed when implementing the service.
• Throughout the text, ISO/IEC 11574 is replaced by EN 300 171 [7], and ISO/IEC 11579-1 is replaced by ETS 300 475-1 [8]. This is important because implementers must follow the ETSI-endorsed references, not the original numbering.
• The wording "this International Standard" is replaced by "the present document." That is a drafting change, but it makes clear which document governs the service description.

What terms does SIST EN 301 260 V1.2.1:2005 define?

• Private Integrated Services Network (PISN): A private network environment for integrated services and signalling between exchanges and terminals.
• Message Waiting Indication (MWI): A supplementary service that indicates to a user that one or more messages are waiting.
• Integrated Services Digital Network (ISDN): The telecom concepts used as the basis for this PISN series.
• Open Systems Interconnection (OSI): The reference framework the series follows for structuring communications and services.
• Supplementary service: An add-on network service that extends basic telephony functions, such as indicating waiting messages.

Who uses SIST EN 301 260 V1.2.1:2005?

SIST EN 301 260 V1.2.1:2005 is used by telecom engineers, PISN system designers, signalling specialists, and product teams working on enterprise telephony equipment. It also matters to quality managers and buyers who need to confirm that a product or network supports message waiting indication in a PISN environment.

The document is relevant to people working with ISDN-based private networks, service interoperability, and ETSI-endorsed telephony standards. Test labs and conformity teams can use it to understand the service model and the reference standards that go with it.

What changed in SIST EN 301 260 V1.2.1:2005 from the previous edition?

SIST EN 301 260 V1.2.1:2005 is described as the third edition of ECMA-241 on message waiting indication and the second edition of ETS 300 260. The scope states that it adds support for additional services, such as multimedia.

Which standards are used with SIST EN 301 260 V1.2.1:2005?

• ISO/IEC 15505 (2003) - the International Standard that the document endorses and adapts.
• EN 300 171 - provides the circuit-mode 64 kbit/s bearer services reference.
• ETS 300 475-1 - provides the reference configuration for PTN eXchanges (PTNXs).

What does the SIST EN 301 260 V1.2.1:2005 document contain?

The document contains the ETSI foreword, the endorsement notice for ISO/IEC 15505 (2003), and the clause 3 update that inserts ETSI normative references. It also contains a reference-mapping table that replaces ISO/IEC 11574 with EN 300 171 and ISO/IEC 11579-1 with ETS 300 475-1.

For implementers, the most useful content is the reference substitution and wording changes throughout the text, because those show which companion standards govern the PISN message waiting indication service. The document also includes national transposition dates, publication history, and administrative notices on copyright and IPR handling.