SPEECH PROCESSING, TRANSMISSION AND QUALITY ASPECT (STQ); FUTURE APPROACHES TO SPEECH TRANSMISSION QUALITY ACROSS MULTIPLE INTERCONNECTED NETWORKS

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English

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European Telecommunications Standards Institute

Intellectual Property Rights
Foreword
Introduction
1 Scope
2 References
3 Definitions and abbreviations
  3.1 Definitions
  3.2 Abbreviations
4 Background
5 General
  5.1 Factors affecting speech transmission quality
  5.2 Assessment of speech transmission quality
  5.3 Control of speech transmission quality
  5.4 Voice band traffic
  5.5 Automatic speech transmission quality system
  5.6 Transmission impairment
6 Signalling requirements to support end-to-end speech
  transmission quality
  6.1 Network configuration
  6.2 Use of VQoS information
  6.3 Speech transmission quality categories
  6.4 User strategies and issues
  6.5 Signalling parameters
  6.6 Interim issues
Annex A (informative): Transmission impairment
      A.1 Transmission impairment types
Annex B (informative): Speech transmission quality ratings
Annex C (informative): Example ANF service description
      C.1 Scope
      C.2 References
      C.3 Definitions and abbreviations
      C.4 Specification of the ANF
Annex D (informative): QoS - IP performance vs. Speech Quality
      D.1 Introduction
      D.2 PDV effect on Speech Quality
      D.3 Conclusion
History

Identifies trends in the design of networks and choices of technology that affect speech transmission quality and are expected to lead to a wider range of quality levels that will be experienced by callers. It reviews the implications of the ITU definitions of call quality categories and identifies the main impairment factors that need to be managed in order to provide specified levels of quality. Establishes the options for exchanging information between interconnected networks and concludes by specifying a "Stage 1" type of description for the exchange of quality parameter information about individual calls.

Committee	STQ
DocumentType	Standard
Pages	38
PublisherName	European Telecommunications Standards Institute
Status	Current

ES 201 801 : 1.1.1	SPEECH PROCESSING, TRANSMISSION AND QUALITY ASPECTS (STQ); TRANSFER OF PERFORMANCE PARAMETERS OF CONNECTIONS ON A PER CALL BASIS; END-TO-END SPEECH TRANSMISSION PERFORMANCE ADDITIONAL NETWORK FEATURE (ANF); SERVICE DESCRIPTION
EG 202 009-2 : 1.3.1	USER GROUP; QUALITY OF TELECOM SERVICES; PART 2: USER RELATED INDICATORS ON A SERVICE SPECIFIC BASIS

ETS 300 415 : 20002	PRIVATE INTEGRATED SERVICES NETWORK (PISN) - TERMS AND DEFINITIONS
ETR 004 : 20001	BUSINESS TELECOMMUNICATIONS (BT); OVERALL TRANSMISSION PLAN ASPECTS OF A PRIVATE BRANCH NETWORK FOR VOICE CONNECTIONS WITH ACCESS TO THE PUBLIC NETWORK
EG 202 086 : 2.0.0	SPEECH PROCESSING, TRANSMISSION AND QUALITY ASPECTS (STQ); OBJECTIVES AND PRINCIPLES FOR THE TRANSMISSION PERFORMANCE OF MULTIPLE INTERCONNECTED NETWORKS THAT AIM TO PROVIDE "TRADITIONAL QUALITY" TELEPHONY SERVICES
ETS 300 283 : 20001	BUSINESS TELECOMMUNICATIONS (BTC) - PLANNING OF LOUDNESS RATING AND ECHO VALUES FOR PRIVATE NETWORKS DIGITALLY CONNECTED TO THE PUBLIC NETWORK
EG 201 050 : 1.2.2	SPEECH PROCESSING, TRANSMISSION AND QUALITY ASPECTS (STQ) - OVERALL TRANSMISSION PLAN ASPECTS FOR TELEPHONY IN A PRIVATE NETWORK
ETR 275 : 20001	TRANSMISSION AND MULTIPLEXING (TM) - CONSIDERATIONS ON TRANSMISSION DELAY AND TRANSMISSION DELAY VALUES FOR COMPONENTS ON CONNECTIONS
ETR 250 : 20001	TRANSMISSION AND MULTIPLEXING (TM) - SPEECH COMMUNICATION QUALITY FROM MOUTH TO EAR FOR 3,1 KHZ HANDSET TELEPHONY ACROSS NETWORKS
TBR 038 : 20001	PUBLIC SWITCHED TELEPHONE NETWORK (PSTN) - ATTACHMENT REQUIREMENTS FOR A TERMINAL EQUIPMENT INCORPORATING AN ANALOGUE HANDSET FUNCTION CAPABLE OF SUPPORTING THE JUSTIFIED CASE SERVICE WHEN CONNECTED TO THE ANALOGUE INTERFACE OF THE PSTN IN EUROPE
ETR 283 : 20001	EQUIPMENT ENGINEERING (EE) - TRANSIENT VOLTAGES AT INTERFACE A ON TELECOMMUNICATIONS
EG 201 377-1 : 1.3.2	SPEECH AND MULTIMEDIA TRANSMISSION QUALITY (STQ); SPECIFICATION AND MEASUREMENT OF SPEECH TRANSMISSION QUALITY; PART 1: INTRODUCTION TO OBJECTIVE COMPARISON MEASUREMENT METHODS FOR ONE-WAY SPEECH QUALITY ACROSS NETWORKS

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EG 201 474 : 1.1.1

Current

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