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ITU T.5:1998

ITU T.5:1998 Test Methodology For Group 3 Facsimile Processing Equipment In The Public Switched Telephone Network Defines the testing methodology for evaluating the performance of Group 3 facsimile processing equipment incorporated in Signal Processing Network Element (SPNE) of the Public Switched Telephone Netwo

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Table of Contents

1Scope
2References
3Abbreviationsanddefinitions
3.1Abbreviations
3.2Definitions
4Overview
4.1Addressedissues
4.2Directionoftransmission
4.3Numberofcalls
4.5Facsimileterminalselection
5Facsimileterminalconfigurations
5.1StandardGroup3facsimilemode
5.1.1Std/Conf/1:Referenceconfiguration
5.1.2Std/Conf/2
5.1.3Std/Conf/3
5.1.4Std/Conf/4
5.2Non-standardGroup3facsimilemode
5.2.1Non-standardGroup3facsimilemode1
5.2.2Non-standardGroup3facsimilemode2
6Networkconditions
6.1Access-linkimpairments
6.1.1Definition
6.1.2Accesslinkimpairmentsconditions
6.2Trafficloading
6.2.1Definition
6.2.2Loadingconditions
6.3Delay
6.4Bearerimpairments
6.4.1Circuit-orientedCME
6.4.2Identificationofthebearerchannelswith
markers
6.4.3Packet-orientedCME
6.4.4Bearerconditions
6.5Forwarderrorcorrection
6.6Returnecholevel
6.7Referenceconditions
6.7.1Referencetestcondition1
6.7.2Referencetestcondition2
6.7.3Referencetestcondition3
6.7.4Referencetestcondition4
6.7.5Referencetestcondition5
6.7.6Referencetestcondition6
6.7.7Referencetestcondition7
6.7.8Referencetestcondition8
7Facsimilecallqualityassessment
8Baselinemeasurements
8.1Facsimileterminalbaselinetests
8.2CMEbaselinetests
9Testmethodology
AnnexA-Group3facsimileprocedures
A.1Group3facsimilerecognition:detectionand
classification
A.1.1Objective
A.1.2Settings
A.1.3Testconditions
A.1.4Parametersofinvestigation
A.1.5Monitoring/measurementpoints
A.2Proprietaryfacsimilefall-backtoADPCMpath
A.2.1Objective
A.2.2Settings
A.2.3Testconditions
A.2.4Parametersofinvestigation
A.2.5Monitoring/measurementpoints
A.3Group3facsimileimagequalityinpresenceof
combinedaccesslinkandbearerlinkimpairments
A.3.1Objective
A.3.2Settings
A.3.3Testconditions
A.3.4Monitoring/measurementpoints
A.4Group3facsimileimagequalityinpresenceof
bearerlinkimpairments
A.4.2Settings
A.4.4Monitoring/measurementpoints
A.5CMErecoveryfollowingunexpectedeventsduring
facsimilecallprogress
A.5.1Objective
A.5.2Settings
A.5.3Testconditions
A.6Voicebanddataquality
A.6.1Objective
A.6.2Settings
A.6.3Testconditions
A.6.4Monitoring/measurementpoints
A.7EffectofGroup3facsimileprotocolvariability
A.7.1Objective
A.7.2Settings
A.7.3Testconditions
A.7.4Parametersofinvestigation
A.8Effectoftransmissionlevelandechoreturnloss
A.8.1Objective
A.8.2Settings
A.8.3Testconditions
A.8.4Parametersofinvestigation
A.8.5Monitoring/measurementpoints
A.9Impactoftransmissionintegrityduetotiming
deviationsonfacsimilecallquality
A.9.1Objective
A.9.2Settings
A.9.3Testconditions
A.9.4Monitoring/measurementpoints
A.10Itemsforfurtherstudy
A.10.1Ratesandmodulationschemes
A.10.2Facsimilequalityassessment
A.10.3Codingalgorithms
A.10.4Errors
A.10.5CMEnetworks
A.10.6OtherSPNE
AppendixI-IdentifyingademodulatedcallinaDCME
I.1Principles
I.2Implementation

Abstract

Defines the testing methodology for evaluating the performance of Group 3 facsimile processing equipment incorporated in Signal Processing Network Element (SPNE) of the Public Switched Telephone Network.

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