SIST EN 301 117 V1.1.1:2003

Overview

SIST EN 301 117 V1.1.1:2003 defines requirements for the Broadband Integrated Services Digital Network (B-ISDN) ATM Adaptation Layer (AAL), specifically focusing on the sublayer known as the Service Specific Co-ordination Function (SSCF). Its purpose is to facilitate the Connection-Oriented Transport Service (COTS) by endorsing ITU-T Recommendation I.365.3 (1995) as part of the European Telecommunications Standards Institute (ETSI) standardization effort. This standard harmonizes the underlying international approach to transport services in B-ISDN networks by ensuring compatibility and coordination at protocol and service layers.

By adopting ITU-T I.365.3, SIST EN 301 117 V1.1.1:2003 enhances the interoperability, reliability, and efficiency of B-ISDN networks, crucial for developing modern high-speed communication infrastructures.

Key Topics

• B-ISDN Architecture: Provides context for the standard within the broader structure of Broadband Integrated Services Digital Networks, which support multimedia traffic over wide area networks.
• ATM Adaptation Layer (AAL): Describes how AAL enables user protocols to operate seamlessly over the Asynchronous Transfer Mode (ATM) layer, optimizing the transport of a variety of service types.
• Service Specific Co-ordination Function (SSCF): Explains the essential sublayer that connects AAL protocols, particularly the Service Specific Connection-Oriented Protocol (SSCOP), with higher layers needing dependable connection-oriented transport.
• Connection-Oriented Transport Service (COTS): Outlines mechanisms that assure reliable, ordered delivery for service and network applications relying on ATM networks.
• International Harmonization: Endorses ITU-T protocols to promote global compatibility, promoting international deployment and standardization.

Applications

SIST EN 301 117 V1.1.1:2003 offers practical value in the following areas:

• Telecommunications Infrastructure: Supports telecom operators in deploying B-ISDN networks that require robust and interoperable transport services for high bandwidth applications.
• Service Provider Networks: Enables providers to deliver a range of services - including voice, video conferencing, and broadband data - with guaranteed reliability and order through ATM networks.
• Network Equipment Manufacturing: Empowers equipment vendors to build switches, routers, and access devices that adhere to standardized ATM adaptation protocols, ensuring seamless operation and integration.
• Research and Development: Serves as a foundation for developing new B-ISDN-based solutions, ensuring adherence to internationally recognized performance and interoperability standards.

By conforming to this standard, organizations ensure the interoperability and compliance of their systems with European and international telecommunications frameworks, paving the way for scalable network deployments.

Related Standards

For further context or implementation, consider the following related standards:

• ITU-T Recommendation I.365.3: Defines the international baseline for the SSCF required to support COTS in ATM-based networks, forming the reference document for this standard.
• ETSI EN 301 071: Addresses general principles for ATM Adaptation Layer in B-ISDN.
• ITU-T Q.2110: Specifies the Service Specific Connection-Oriented Protocol (SSCOP) leveraged by the SSCF defined here.
• ISO/IEC 8073 / ITU-T X.213: Relates to transport protocols and connection-oriented network services referenced in this context.
• ETSI EN 301 195: Covers further aspects of B-ISDN ATM adaptation and additional sublayer specifications.

Implementing SIST EN 301 117 V1.1.1:2003 is essential for organizations involved in broadband communications, ensuring alignment with key international standards for ATM, B-ISDN, and related telecommunication technologies.