SIST ETS 300 842 E1:2003

Overview

SIST ETS 300 842 E1:2003 specifies the requirements for the Service Specific Co-ordination Function (SSCF) sublayer within the Broadband Integrated Services Digital Network (B-ISDN) architecture. Specifically, this standard addresses the integration of the SSCF above the Signalling ATM Adaptation Layer (SSCOP, Q.2110) to support the provision of the Connection-Oriented Network Service (CONS) as defined in ITU-T X.213. This standard is the Slovene endorsement of the ETSI ETS 300 842 standard, itself closely aligned with ITU-T Recommendation I.365.2 (1995).

B-ISDN is based on ATM (Asynchronous Transfer Mode) technology, which provides a high-speed backbone for unified voice, data, and multimedia communication services. The SSCF ensures reliable, connection-oriented services over ATM networks.

Key Topics

• ATMs and Adaptation Layers: The standard establishes guidance for implementing ATM Adaptation Layer (AAL) sublayers specifically for reliable data transport.
• SSCF Role: The Service Specific Co-ordination Function (SSCF) bridges the signaling between ATM’s SSCOP protocol and connection-oriented upper layer services.
• CONS Support: Detailed provisions are made for delivering Connection-Oriented Network Services (CONS) as specified in ITU-T Recommendation X.213.
• Reference Architecture: The standard aligns with international recommendations, ensuring interoperability in global B-ISDN deployments.
• Standard Endorsement: The text is directly based on ITU-T Recommendation I.365.2 (1995), ensuring harmony across European and international telecom infrastructure.

Applications

SIST ETS 300 842 E1:2003 is essential for organizations and service providers deploying broadband ISDN and ATM-based infrastructure. Its applications include:

• Telecommunications Carriers: For enabling robust, connection-oriented services in public and private B-ISDN offerings.
• Enterprise Networks: Supporting high-reliability data and multimedia services over ATM links.
• Network Equipment Vendors: Guiding the implementation of ATM adaptation and signaling stacks for compliance and interoperability.
• Systems Integration: Facilitating the integration of multi-vendor ATM equipment within a unified B-ISDN environment.
• Network Architecture: Ensuring seamless interoperation between transport (ATM), adaptation (AAL, SSCF), and service (CONS) layers.

By following this standard, organizations can achieve consistent connection-oriented behavior across diverse hardware platforms and network configurations, minimizing incompatibilities and maximizing service reliability.

Related Standards

To fully implement a standards-compliant B-ISDN or ATM solution, consider these related standards:

• ITU-T Recommendation I.365.2: The foundational international specification on which this standard is based, detailing SSCF and its relation to ATM and network services.
• ITU-T Recommendation Q.2110: Defines the SSCOP protocol, serving as the foundation for SSCF operation in ATM-based signaling.
• ITU-T Recommendation X.213: Specifies the requirements for Connection-Oriented Network Service (CONS), the service ultimately delivered by the protocols covered in this standard.
• ETSI ETS 300 842: The European version and original technical context for this endorsement by SIST.

By referencing SIST ETS 300 842 E1:2003 and related standards, organizations establish a reliable, standards-based architecture for broadband networking, ATM adaptation, and connection-oriented services in modern digital communications systems.