Overview
SIST EN 301 825 V1.1.1:2005 defines the protocol and additional features that support mobility within Private Integrated Services Networks (PISN). Published by the Slovenian Institute for Standardization (SIST), this standard aligns with ETSI EN 301 825 and modifies international standard ISO/IEC 15429 (2003). The standard specifies inter-exchange signalling protocols for two core functionalities: the Wireless Terminal Location Registration (WTLR) supplementary service and the Wireless Terminal Information Exchange (WTINFO) additional network feature. These features enable dynamic registration, deregistration, and location information exchange for wireless terminals (WTMs) across distinct access points in the PISN, ensuring seamless service continuity and restriction information sharing for mobile users.
Key Topics
Applications
The practical value of SIST EN 301 825 V1.1.1:2005 lies in its contribution to the reliability, flexibility, and administrative efficiency of private telephony solutions:
- Enterprise Mobility: The standard is essential for businesses relying on internal wireless communications, such as hospitals, campuses, and large offices, by supporting users who require seamless service across multiple buildings or sites.
- Service Continuity: Ensures that wireless users can make and receive calls, access messaging and other network services, and maintain their service settings regardless of their physical location within the PISN.
- Access Control & Security: By enabling the transfer of restriction information and allowing for location checks, the standard supports enhanced network security, user authentication, and policy enforcement.
- Interoperability: Compatibility with QSIG and integration towards broader ISDN and OSI frameworks allows organizations to deploy systems from diverse vendors while maintaining consistent functionality and service quality.
Related Standards
The following standards are referenced as part of the protocol suite and functional model for PISN mobility services:
- EN 300 189: Addressing in Private Integrated Services Networks.
- EN 300 171: Circuit-mode 64 kbit/s bearer services for PISN.
- ETS 300 475-1: Reference configuration for Private Telecommunication Network Exchanges (PTNXs).
- EN 300 239: Generic functional protocol for supplementary services in PISN.
- EN 300 257: Inter-exchange signalling protocol for call diversion supplementary service.
- EN 301 824: Specification of the functional model and information flows for WTLR and WTINFO.
- EN 301 829: Inter-exchange signalling protocol for wireless terminal authentication.
- EN 301 255: Message waiting indication supplementary service protocol.
These related standards collectively provide comprehensive coverage of service functionality, feature sets, interoperability, and security for private integrated telephony networks.
Keywords: PISN, wireless terminal location registration, inter-exchange signalling protocol, QSIG, mobility, PINX, supplementary service, ANF, enterprise telephony, network security.
