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ETR 250 : 20001

Current

Current

The latest, up-to-date edition.

TRANSMISSION AND MULTIPLEXING (TM) - SPEECH COMMUNICATION QUALITY FROM MOUTH TO EAR FOR 3,1 KHZ HANDSET TELEPHONY ACROSS NETWORKS

Available format(s)

Hardcopy , PDF

Language(s)

English

€46.74
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Foreword
Introduction
1 Scope
2 References
3 Definitions and abbreviations
   3.1 Definitions
   3.2 Abbreviations
4 Typical network components and configurations
   4.1 Network components
   4.2 Network configurations
5 General considerations; individual parameters and combination
   effects
6 Individual transmission parameters
   6.1 General survey of the individual transmission parameters
   6.2 Basic attenuation/frequency response parameters
   6.3 Overall, send, receive and circuit loudness ratings
   6.4 Sidetone
   6.5 Echo and stability
   6.6 Transmission time
   6.7 Noise and quantizing distortion
   6.8 Power handling and non-linear distortion
   6.9 Crosstalk
   6.10 Effects of time-varying impairments
7 Equipment and systems with special transmission properties
   7.1 Echo control devices
   7.2 Low bit-rate codecs
   7.3 Digital Circuit Multiplication Equipment (DCME)
   7.4 Mobile communication systems
   7.5 ATM systems
8 Combination effects of impairments on speech communication
   quality - background to the ETSI model
   8.1 Introduction
   8.2 Derivation of the ETSI model
   8.3 Estimates of users' reactions given in the ETSI model
   8.4 Discussion of ratings and impairment factors in the
        ETSI model
   8.5 Future up-dating and amendments of the ETSI model
9 A computation model for the overall voice transmission
   quality from mouth to ear
   9.1 Description of algorithms in the ETSI model
   9.2 Comparisons of results from the ETSI model, other
        models and subjective tests
   9.3 Future verification of the ETSI model
   9.4 Application of the ETSI model in transmission planning
   9.5 Statistical use of the ETSI-model for quality control
        of existing networks: some guidelines
10 Assessment of end-to-end voice transmission performance of
   networks
   10.1 General
   10.2 Assessment of customer opinion
   10.3 Objective parameter measurements
Annex A: Impedance strategy in 2-wire networks
Annex B: Noise aspects in understanding overall network
         performance
Annex C: Absolute and relative level
Annex D: Technical report on echo cancelling
Annex E: A discussion of subjective tests
Annex F: Some examples of voice transmission quality evaluations
         by the ETSI model
Annex G: Consideration of low bit-rate codecs in transmission
         planning
Annex H: Transmission Quality of Digital Circuit Multiplication
         Equipment (DCME)
Annex J: Usability of telecommunication services; price and
         quality considerations
Annex K: Some notes on the verification of the ETSI computation
         model
Annex L: Propagation delay and echo control procedures
Annex M: Aspects of voice transmission quality which need further
         studies
Annex N: Bibliography
History

Pertains to mouth to ear narrowband (nominally 3,1 kHz) telephony connections via handsets across one or more telecommunications networks of any type, public or private, fixed or mobile.

Committee
TM 5
DocumentType
Standard
Pages
208
PublisherName
European Telecommunications Standards Institute
Status
Current

EG 201 377-3 : 1.1.1 SPEECH PROCESSING, TRANSMISSION AND QUALITY ASPECTS (STQ); SPECIFICATION AND MEASUREMENT OF SPEECH TRANSMISSION QUALITY; PART 3: NON-INTRUSIVE OBJECTIVE MEASUREMENT METHODS APPLICABLE TO NETWORKS AND LINKS WITH CLASSES OF SERVICES
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
TR 103 121 : 1.1.1 SPEECH AND MULTIMEDIA TRANSMISSION QUALITY (STQ); ADAPTATION OF THE ETSI QOS MODEL TO BETTER CONSIDER RESULTS FROM FIELD TESTING
TR 102 479 : 1.1.1 TELECOMMUNICATIONS AND INTERNET CONVERGED SERVICES AND PROTOCOLS FOR ADVANCED NETWORKING (TISPAN); REVIEW OF AVAILABLE MATERIAL ON QOS REQUIREMENTS OF MULTIMEDIA SERVICES
EG 202 057-2 : 1.3.2 SPEECH AND MULTIMEDIA TRANSMISSION QUALITY (STQ); USER RELATED QOS PARAMETER DEFINITIONS AND MEASUREMENTS; PART 2: VOICE TELEPHONY, GROUP 3 FAX, MODEM DATA SERVICES AND SMS
TR 102 356 : 1.1.1 SPEECH PROCESSING, TRANSMISSION AND QUALITY ASPECTS (STQ); APPLICATION AND ENHANCEMENTS OF THE E-MODEL (ETR 250); OVERVIEW OF AVAILABLE DOCUMENTATION AND ONGOING WORK
TR 102 024-7 : 4.1.1 TELECOMMUNICATIONS AND INTERNET PROTOCOL HARMONIZATION OVER NETWORKS (TIPHON) RELEASE 4; END-TO-END QUALITY OF SERVICE IN TIPHON SYSTEMS; PART 7: DESIGN GUIDE FOR ELEMENTS OF A TIPHON CONNECTION FROM AN END-TO-END SPEECH TRANSMISSION PERFORMANCE POINT OF VIEW
TR 101 329 : 2.1.1 TELECOMMUNICATIONS AND INTERNET PROTOCOL HARMONIZATION OVER NETWORKS (TIPHON) - GENERAL ASPECTS OF QUALITY OF SERVICE (QOS)
TR 101 149 : 1.1.1 2-WIRE ANALOGUE VOICE BAND INTERFACES; TERMINAL EQUIPMENT TRANSMITTING VOICE SIGNALS; TEST SIMULATION FOR LEVEL LIMITATION REQUIREMENTS
TR 101 329-7 : 2.1.1 TIPHON; DESIGN GUIDE; PART 7: DESIGN GUIDE FOR ELEMENTS OF A TIPHON CONNECTION FROM AN END-TO-END SPEECH TRANSMISSION PERFORMANCE POINT OF VIEW
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 201 474 : 1.1.1 SPEECH PROCESSING, TRANSMISSION AND QUALITY ASPECT (STQ); FUTURE APPROACHES TO SPEECH TRANSMISSION QUALITY ACROSS MULTIPLE INTERCONNECTED NETWORKS
TR 102 526 : 1.1.1 SPEECH PROCESSING, TRANSMISSION AND QUALITY ASPECTS (STQ); WIDEBAND TELEPHONY CONSIDERATIONS
EG 201 050 : 1.2.2 SPEECH PROCESSING, TRANSMISSION AND QUALITY ASPECTS (STQ) - OVERALL TRANSMISSION PLAN ASPECTS FOR TELEPHONY IN A PRIVATE NETWORK
EG 202 320 : 1.2.1 HUMAN FACTORS (HF); DUPLEX UNIVERSAL SPEECH AND TEXT (DUST) COMMUNICATIONS
ETR 275 : 20001 TRANSMISSION AND MULTIPLEXING (TM) - CONSIDERATIONS ON TRANSMISSION DELAY AND TRANSMISSION DELAY VALUES FOR COMPONENTS ON CONNECTIONS

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