SIST EN 301 813-1 V1.1.1:2005

Overview

SIST EN 301 813-1 V1.1.1:2005 establishes the protocol specification for the Generic Addressing and Transport (GAT) protocol within both Integrated Services Digital Network (ISDN) and Broadband Integrated Services Digital Network (B-ISDN) environments. This European standard, based on a modified ITU-T Recommendation Q.860 (2000), details the requirements and mechanisms needed to pass Application Protocol Data Units (APDUs) efficiently and securely between service provision points. These points may reside within the same network, span across multiple networks, or involve terminal equipment interfacing with the network.

By defining the GFT-Control protocol, this standard supports interoperability and flexibility across various existing signaling protocols, including DSS1, DSS2, SS#7, QSIG, and B-QSIG, ensuring broad compatibility for ISDN and B-ISDN services.

Key Topics

• Protocol Specification: Outlines the structure and behavioral expectations for the GAT protocol in the context of ISDN and B-ISDN communications.
• APDU Transport: Specifies methods for the reliable exchange of APDUs between network elements and user terminals.
• Signaling Integration: Ensures the GAT protocol functions over multiple common signaling systems:
  • Digital Subscriber Signaling System No. 1 (DSS1)
  • Digital Subscriber Signaling System No. 2 (DSS2)
  • Signaling System No. 7 (SS#7)
  • QSIG and Broadband-QSIG (B-QSIG)
• Addressing Consistency: Incorporates revised referencing from ITU-T Q.860 to align with European standards and maintain consistent addressing and facility information elements.
• Interoperability: Promotes network and device interoperability by employing standardized messaging and addressing frameworks.
• Conformance and Testing: Lays the groundwork for further parts of the standard related to testing and conformance, ensuring implementations meet established guidelines.

Applications

Organizations implementing ISDN and B-ISDN networks benefit significantly from the standardized approach provided by this protocol, including:

• Network Operators: Enables seamless communication between different network segments and between networks provided by different operators.
• Service Providers: Facilitates the deployment of advanced and supplementary services across integrated digital networks.
• Equipment Manufacturers: Provides a clear specification for developing terminal equipment and network devices compatible with ISDN and B-ISDN signaling environments.
• Enterprise Communication Systems: Ensures robust interoperability in complex communication infrastructures that use a mixture of legacy and next-generation signaling protocols.
• Regulatory Compliance: Supports the harmonization of European telecommunications infrastructure through adoption of recognized and ratified standards.

Related Standards

• EN 300 196-1: "Integrated Services Digital Network (ISDN); Generic functional protocol for the support of supplementary services; Digital Subscriber Signalling System No. one (DSS1) protocol; Part 1: Protocol specification"
• ITU-T Q.860: The original recommendation forming the basis of GAT protocol specifications, with region-specific modifications in the SIST EN 301 813-1 standard.
• QSIG/B-QSIG: Standards for signaling between private branch exchanges within integrated digital networks.
• DSS1/DSS2: Key protocols for accessing and managing ISDN and B-ISDN services on subscriber lines.
• SS#7 (Signaling System No. 7): Global standard for signaling in public telecommunication networks.

By adopting SIST EN 301 813-1 V1.1.1:2005, stakeholders can ensure standardized, interoperable, and secure APDU transmission in both ISDN and B-ISDN environments, aligning with international best practices and supporting the evolution of digital network services throughout Europe.