SIST ETS 300 261 E2:2005 PDF

Overview

SIST ETS 300 261 E2:2005 is a European Telecommunication Standard establishing the inter-exchange signalling protocol for the Call transfer supplementary service (SS-CT) within a Private Integrated Services Network (PISN). Based on the modified ISO/IEC 13869 (1995), the standard is crucial for enabling and managing call transfers between Private Telecommunication Network eXchanges (PTNX) interconnected in a Private Telecommunication Network (PTN). The protocol specified supports seamless communications using the QSIG signalling suite, aligned with ISDN and the Open Systems Interconnection (OSI) model.

Key Topics

• Private Integrated Services Network (PISN): Framework for integrating various telecommunication services within a private network.
• Inter-exchange signalling protocol: Protocol supporting interconnection of multiple PTNXs for supplementary services.
• Call transfer supplementary service (SS-CT): Allows a call to be transferred from one user or extension to another within the PISN.
• Q reference point: Defines the interface between exchanges in a PTN for call-related signalling.
• QSIG (PSS1) protocol: The private signalling system specified for communication between PTNXs.
• Compatibility and modifications: Implements ISO/IEC 13869 with agreed modifications to suit European requirements and ensure interoperability.

Applications

The implementation of SIST ETS 300 261 E2:2005 is essential across numerous environments where advanced telephony and integrated communication services are required, such as:

• Enterprise communications: Enables seamless internal call transfers across large corporate or institutional networks with multiple sites or departments.
• Telecommunications infrastructure: Forms a fundamental building block for private branch exchanges and network-based voice services, supporting functions beyond basic call establishment.
• PBX system integration: Ensures interoperability between different vendors’ systems through standardized signalling, maintaining service continuity during call transfers.
• Enhanced user experience: Facilitates advanced supplementary services like call transfer, improving communication flexibility and productivity within organizations.
• Network scalability: Allows easy expansion of the private network and the addition of new exchanges or locations with retained call management features.

By employing this standard, companies ensure their private telecommunication networks support robust and reliable call transfer features, aligned with international standards, and can seamlessly integrate with emerging network technologies.

Related Standards

For holistic PISN implementation and broader supplementary service support, the following standards are relevant:

• ETS 300 171: Specification, functional models, and information flows for circuit mode basic services in PTN.
• ETS 300 172: Inter-exchange signalling protocol for circuit-mode basic services in PISN.
• ETS 300 189: Addressing in Private Telecommunication Networks.
• ETS 300 238: Inter-exchange signalling protocol for name identification supplementary services in PISN.
• ETS 300 239: Generic functional protocol for the support of supplementary services.
• ETS 300 257: Diversion supplementary services protocol in PISN.
• ETS 300 259: Path replacement additional network feature protocol.
• ETS 300 260: Specification and information flows for call transfer supplementary service.
• ETS 300 387: Method for the specification of basic and supplementary services.
• ETS 300 475-1: Reference configuration for PISN eXchanges (PINXs).

Conclusion

SIST ETS 300 261 E2:2005 provides a robust and standardized approach to implementing call transfer capabilities in Private Integrated Services Networks using QSIG protocols. Organizations adopting this standard benefit from enhanced interoperability, future-proof communication systems, and compatibility with a suite of related telecommunication standards essential for private network operations. Using this standard boosts efficiency, scalability, and service integration, underpinning reliable voice and data communication across interconnected enterprise environments.