SIST EN 300 972 V8.0.1:2003

Overview

SIST EN 300 972 V8.0.1:2003 is a Slovenian standard that aligns with the European Norm (EN) 300 972 Version 8.0.1, covering the Digital Cellular Telecommunications System (Phase 2+) (GSM): Half Rate Speech; Discontinuous Transmission (DTX) for Half Rate Speech Traffic Channels. Published by the Slovenski inštitut za standardizacijo (SIST), this document specifies technical requirements and guidelines for implementing Discontinuous Transmission (DTX) mechanisms on half rate speech channels in GSM networks, supporting the optimization of radio resource utilization and battery life in mobile devices. The standard applies to GSM 06.41 version 8.0.1, as issued by ETSI under Release 1999.

Key Topics

• Discontinuous Transmission (DTX)
  DTX is a transmission technique allowing mobile devices to momentarily stop transmitting during periods of silence in a call, reducing overall power consumption and minimizing interference on the network.

• Half Rate Speech Channels
  The standard defines provisions for half rate speech channels, which increase spectral efficiency by allowing more simultaneous calls within the same frequency band.

• Speech Activity Detection (SAD) and Comfort Noise Generation (CNG)
  The document describes the mechanisms for speech activity detection and for generating comfort noise during silent call segments, enhancing perceived call quality.

• System Compatibility
  Ensures that implementations are interoperable and compliant with existing GSM network architecture and protocols specified for digital cellular telecommunications.

• Update Integration
  Version 8.0.1 integrates change requests (CRs) from SMG#31, reflecting recent industry improvements and harmonization with other GSM standards.

Applications

This standard is essential for:

• Mobile Network Operators
  Optimizing network efficiency by managing bandwidth usage more effectively with half rate speech and DTX on GSM systems.

• Mobile Device Manufacturers
  Ensuring mobile devices implement DTX according to uniform technical guidelines, thus extending device battery life and complying with global GSM requirements.

• Telecommunications Equipment Vendors
  Aligning infrastructure equipment, such as base stations and transceivers, with standardized DTX behavior to guarantee compatibility and performance in mixed-vendor environments.

• Testing and Certification Bodies
  Providing a clear benchmark for conformance testing and certification of GSM devices and network components.

By applying SIST EN 300 972 V8.0.1:2003, stakeholders in the mobile telecommunications sector ensure improved network capacity, sustained audio quality, and extended device usability for end users.

Related Standards

• EN 300 972 V8.0.1
  The European base standard from which the Slovenian version is derived.

• GSM 06.41 Version 8.0.1 Release 1999
  Original ETSI specification defining DTX for half rate speech channels.

• Other GSM Standards (Phase 2+)
  Such as those covering full rate speech, enhanced full rate, and adaptive multi-rate (AMR) codecs.

• ETSI Technical Specifications
  Including standards for interoperability, radio transmission, and network integration in the GSM family.

For the most up-to-date status of this and related standards, it is recommended to consult official resources such as the European Telecommunications Standards Institute (ETSI) or the Slovenian Institute for Standardization (SIST).

Keywords: SIST EN 300 972, GSM DTX, half rate speech, digital cellular telecommunications, comfort noise, speech activity detection, GSM standard, mobile communications, ETSI, Phase 2+.