SIST EN 301 918 V1.1.1:2005 PDF

Overview

SIST EN 301 918 V1.1.1:2005 defines the Single Step Call Transfer (SSCT) supplementary service for Private Integrated Services Networks (PISN). Developed by the Slovenian Institute for Standardization (SIST) and aligned with ISO/IEC 19459 (2001), this standard details the specification, functional model, and information flows for enabling efficient call transfer within private telecommunication networks.

The SSCT supplementary service allows a user (user A) who is on a call with another party (user B) to seamlessly transfer that call to a third party (user C) in a single operation. Notably, user A does not need to have an established call with user C before the transfer, enhancing user experience and operational efficiency in enterprise and organizational telephony environments.

Key Topics

• Private Integrated Services Network (PISN): The standard focuses on PISN, which are organizational or enterprise telephone networks based on ISDN concepts, commonly used for internal and external communications.
• Specification and Functional Model: It describes the required functional entities and logical processes for implementing single step call transfer, ensuring interoperability across different equipment and vendors.
• Information Flows: SIST EN 301 918 precisely defines information flows between network components, outlining the signaling necessary to achieve reliable call transfers.
• Service Interoperability: The document standardizes the behavior and signaling within multi-vendor PISN environments, which is essential for compatibility and integration.
• Reference to International Standards: The standard modifies ISO/IEC 19459 to better align with European and national contexts and references relevant ETSI and ISO/IEC standards for addressing, bearer services, and additional PISN supplementary services.

Applications

The Single Step Call Transfer service is vital in a range of professional and organizational applications, including:

• Business Communications: Enhances productivity by allowing users to efficiently redirect calls, such as transferring a customer from reception directly to a specialist without multiple call setups.
• Call Centers: Streamlines customer service operations by minimizing handling times and improving responsiveness through rapid call re-routing.
• Unified Communications: Supports integration with other PBX and ISDN-based systems to provide smooth and consistent user experiences across complex networks.
• Multi-site Enterprises: Ensures employees can easily collaborate and manage calls across geographically dispersed locations, promoting seamless internal communication.

By implementing SSCT as described in SIST EN 301 918 V1.1.1:2005, organizations benefit from increased efficiency, optimal resource allocation, and improved end-user satisfaction within private telecommunication infrastructures.

Related Standards

Several related standards interact with and complement SIST EN 301 918 V1.1.1:2005 for robust PISN deployment:

• EN 300 189: Addressing requirements for PISN (ISO/IEC 11571 modified)
• EN 300 171: Service description, capabilities, and flows for circuit-mode 64 kbit/s bearer services
• ETS 300 475-1: Reference configurations for private telecommunication network exchanges
• EN 300 237: Name identification supplementary services
• ETS 300 260: Call transfer supplementary service specification
• ETS 300 261: Inter-exchange signaling protocol for call transfer
• ETS 300 173: Identification supplementary services specification

Adhering to these interlinked standards ensures compatibility, regulatory alignment, and comprehensive telephony solutions within complex private integrated services networks.

Keywords: PISN, Single Step Call Transfer, supplementary service, call transfer, private telephone network, ISDN, ISO/IEC 19459, ETSI, telecommunication standards, enterprise PBX, information flows, functional model, interoperability.