Table of Contents
FOREWORD
CONTENTS
1Scope,purpose,andapplication
1.1Scope
1.2Purpose
1.3Application
2References
3Abbreviationsanddefinitions
3.1Abbreviations
3.2Definition
4Interfacerequirements
4.1ElectricalinterfacesforclassA,BandCINMDs
4.2TMNdatatransportinterfacesforclassA,BandC
INMDs
4.3InterfacesforclassDINMDs
4.4ReconstructionofsignalforclassDINMDs
5Functionalrequirements
5.1Requiredmeasurementfunctions
5.2Optionalfunctions
6Descriptionofrequiredmeasurementfunctions
6.1Speechmeasurements
6.2Noisemeasurement
6.3Echomeasurement
6.4IPprotocolmeasurements
7Descriptionofoptionalfunctions
7.1Originatingandterminatingaddressdigits
7.2Facilityorcircuitidentification
7.3Timeanddurationofconnection
7.4Signalclassification
7.5Customeridentification
7.6DS1performancemeasurements
7.73kHzflatnoiselevel
7.8Connectiondispositionmeasurements
7.9Dataanalysisandreports
7.10Saturationclipping
7.11Measurementinterval
7.12Doubletalk
7.13Front-endclipping
7.14One-waytransmission
7.15Crosstalk
7.16Stabilityloss
7.17Distortion
7.18Single-endedspeechquality
7.19IPround-tripdelay
7.20IPone-wayconnectivity
7.21Out-of-orderIPpackets
7.22IPpacketslosspattern
7.23Typeandconfigurationofvoicecoder
7.24QuantityoftransmitteddatainIPpackets
7.25PacketArrivalDescriptors
8Requirementsforperformanceofmeasurements
8.1Descriptionofdifferentclasses
8.2Measurementspecification
8.3Requirementsforaccuracy
8.4Descriptionofreferencecircuits
8.5Referencemeasurements
9TestconditionsforClassA,BandCdevices
9.1Testdesign
9.2Multiplemeasurements
9.3CircuitconditionsforClassAdevice
9.4CircuitconditionsforClassBdevice
9.5CircuitconditionsforClassCdevice
AnnexASpeechmaterial
A.1Parameters
A.2Telephoneconnection
A.3Sourcerecordings
AppendixIReviewofmeasurementtechniques
I.1Speechechopathdelay
I.2Verificationofdelaymeasurements
I.3Failureofdelaymeasurement
AppendixIIDegradationoftelephonetransmissionquality
duetonon-stationarynoise
II.1Introduction
II.2Classificationofnon-stationarynoise
II.3Noiseclassificationandmeasurementalgorithm
(example)
II.4Psophometricmeasure
II.5Performanceevaluation(example)
II.6Conclusion
Bibliography Abstract
Provides specifications for voice service transmission measurement devices that provide measurements on an in-service and non-intrusive basis. Specifies interfaces, measurement ranges, and accuracy requirements for measuring voice-grade transmission parameters and describes optional functions associated with these parameters.
