Overview
SIST EN 300 364 V1.2.1:2005 specifies the inter-exchange signalling protocol for the "Do Not Disturb" (DND) and "Do Not Disturb Override" supplementary services within Private Integrated Services Networks (PISN). The standard is based on ISO/IEC 14844 (1996) with specific modifications for European implementation and corresponds to version 2 of ETS 300 364. It plays a crucial role in ensuring seamless communication and service management for private telecommunication networks, utilizing ISDN and QSIG protocols for advanced call control.
Key Topics
-
Do Not Disturb (DND) Supplementary Service
This feature enables users to block incoming calls or messages temporarily, thereby preventing interruptions during meetings or critical tasks.
-
Do Not Disturb Override
This service allows authorized users (such as managers or emergency staff) to bypass the DND setting in cases where urgent communication is required.
-
Inter-exchange Signalling Protocol
Specifies the QSIG protocol, also known as Private integrated Signalling System no.1 (PSS1), used for communication between exchanges within a PISN.
-
Compatibility with ISDN and OSI Frameworks
The standard aligns with ISDN principles and the Open Systems Interconnection (OSI) model, ensuring interoperability in multi-vendor environments.
-
Normative References
Defines the connection and relation to other standards concerning PISN functional models, basic and supplementary services, and signalling protocols.
Applications
The implementation of SIST EN 300 364 V1.2.1:2005 enhances both operational efficiency and user satisfaction in organizations deploying private telecommunications networks:
-
Enterprise Telephony
Large organizations use DND and override features to streamline internal communications, manage call flows, and handle urgent messages effectively.
-
Virtual Private Networks (VPN)
Supports reliable, secure, and feature-rich call handling in corporate VPN telephony infrastructures.
-
Integrated Services Digital Network (ISDN)
Facilitates advanced call control features over digital networks, providing flexibility and robust communication tools for employees.
-
Multi-site Connectivity
Ensures that users distributed across different locations within a private network receive consistent supplementary services, improving collaboration and customer response times.
Related Standards
The document relies on, and interacts with, several other key standards for PISN and supplementary services:
- EN 300 171 - Specification and control aspects of circuit-mode basic services
- EN 300 172 - Circuit-mode basic services signalling protocol
- ETS 300 239 - Generic functional protocol for supplementary services
- ETS 300 357 - Diversion supplementary services
- ETS 300 259 - Path replacement features
- EN 300 363 - Functional models and flows for DND and DND override
- EN 300 362 - Call offer supplementary services
- EN 300 426 - Call intrusion supplementary service
- ETS 300 366 - Call completion supplementary services
- ETS 300 475-1 - Reference configuration for PTN exchanges
These related standards provide a coherent framework for implementing comprehensive ISDN-based telephony services in PISNs.
Conclusion
SIST EN 300 364 V1.2.1:2005 is essential for organizations looking to deploy advanced and reliable supplementary telephony services such as Do Not Disturb and its override, ensuring effective communication management within Private Integrated Services Networks. By complying with this standard, organizations benefit from improved call control, interoperability, and user experience across their telecommunication infrastructure.