SIST EN 301 655 V1.2.1:2005

• Abstract:

  Endorsement of the last ISO version.

• Status: Published
• Publication Date: 28-Feb-2005
• ICS: 33.040.35 - Telephone networks
• Technical Committee: SPN - Services and Protocols for Networks
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Mar-2005
• Due Date: 01-Mar-2005
• Completion Date: 01-Mar-2005
• Mandate: IT-74
• Ref Project: ETSI EN 301 655 V1.2.1 (2004-01) - Private Integrated Services Network (PISN); Specification, functional models and information flows; Call priority interruption and call priority interruption protection supplementary service [ISO/IEC 15991 (2003), modified]

Overview

SIST EN 301 655 V1.2.1:2005 defines essential specifications for the supplementary services of Call Priority Interruption (CPI) and Call Priority Interruption Protection (CPIP) within Private Integrated Services Networks (PISN). Endorsing the internationally recognized ISO/IEC 15991 (2003), this standard is vital for organizations operating or maintaining telephone networks, particularly those leveraging advanced Private Integrated Services Network (PISN) environments.

The document is part of a broader series produced by ECMA and ETSI, providing a consistent specification framework for telecommunication services in private networks using Integrated Services Digital Network (ISDN) concepts and Open Systems Interconnection (OSI) principles.

Key Topics

• Call Priority Interruption (CPI):
  CPI is a supplementary service in PISN environments that allows certain high-priority calls to interrupt other ongoing lower-priority communications. This is critical in scenarios where urgent or emergency calls must be put through immediately.

• Call Priority Interruption Protection (CPIP):
  CPIP provides the capability to shield certain ongoing calls from interruption. This layer of protection ensures that high-value conversations or sensitive negotiations can proceed without disruption, maintaining business continuity and operational security.

• Specification and Functional Models:
  The standard presents functional models and detailed information flows, helping network administrators implement and maintain these supplementary services accurately within their networking infrastructure.

• Modifications and Endorsement:
  SIST EN 301 655 V1.2.1:2005 aligns closely with ISO/IEC 15991 (2003), while including specific modifications to meet European and Slovenian regulatory requirements, as mandated by SIST.

Applications

Implementing SIST EN 301 655 V1.2.1:2005 brings significant practical value to organizations, especially those operating large-scale or mission-critical private telecommunications networks:

• Enterprise Voice Networks:
  Enables priority handling for executive communications or critical service teams, improving response times and ensuring business operations’ continuity.

• Emergency Response Systems:
  Facilitates immediate on-demand communication by prioritizing emergency calls, vital for healthcare, security, and public safety operations.

• Financial Institutions:
  Ensures market-critical or time-sensitive calls are never blocked or interrupted, supporting compliance and trading reliability.

• Private VPNs and Closed User Groups:
  Supports flexible and secure handling of voice traffic priorities within virtual private networks and organizational closed user groups.

• Network Reliability and Security:
  Provides a robust method to manage and protect communications, reducing downtime and minimizing service interruptions for essential personnel.

Related Standards

Several related standards complement SIST EN 301 655 V1.2.1:2005 to create a comprehensive framework for private telecommunications networks:

• EN 300 171: Private Integrated Services Network; Service description, functional capabilities, and information flows for circuit-mode 64 kbit/s bearer services.
• ETS 300 475-1: Reference configuration for Private Telecommunication Network exchanges.
• EN 300 258: Path replacement features within PISN.
• EN 300 260: Call transfer supplementary service for PISN.
• EN 300 365: Call completion supplementary services.
• EN 300 256: Call diversion features within private networks.
• EN 301 256: Call interception functionalities as an additional network feature.

To ensure compliance, organizations should consult these standards alongside SIST EN 301 655 V1.2.1:2005 for a holistic approach to network service architecture, signaling protocols, and supplementary service integration in their PISN environments.

Keywords: PISN, private integrated services network, call priority interruption, supplementary services, telecommunications, ISDN, call interruption protection, ETSI, ISO/IEC 15991, information flows, VPN, business continuity, network security.

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Private Integrated Services Network (PISN); Specification, functional models and information flows; Call priority interruption and call priority interruption protection supplementary service [ISO/IEC 15991 (2003), modified]33.040.35Telefonska omrežjaTelephone networksICS:Ta slovenski standard je istoveten z:EN 301 655 Version 1.2.1SIST EN 301 655 V1.2.1:2005en01-marec-2005SIST EN 301 655 V1.2.1:2005SLOVENSKI
STANDARD
ETSI ETSI EN 301 655 V1.2.1 (2004-01) 2
Reference REN/ECMA-00255 Keywords endorsement, PISN, PSS1, supplementary service, VPN ETSI 650 Route des Lucioles F-06921 Sophia Antipolis Cedex - FRANCE
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