ITU P.313:2007
ITU P.313:2007 Transmission Characteristics For Cordless And Mobile Digital Terminals Describes audio performance requirements for portable digital cordless and mobile handsets, headset and speakerphone sets.
Table of Contents
1General1.1Scope
1.2References
1.3Definitions
1.4Abbreviations
2Testconfiguration
2.1Setupforhandsetterminal
2.2Setupforheadset
2.3Setupforspeakerphoneset
3Testconditions
3.1Testsignal
3.2Testenvironment
4Handsettechnicalrequirements
4.1Sendingcharacteristics
4.2Receivingcharacteristics
4.3Sidetonecharacteristics
4.4Noisecontrastandcomfortnoise
4.5Weightedterminalcouplingloss(TCLw)
4.6Stabilityloss
4.7Delay
4.8Speechclipping
4.9Acousticsafetyoftelephoneuser
5Headsettechnicalrequirements
5.1Headsetsendingcharacteristics
5.2Headsetreceivingcharacteristics
5.3Sidetonecharacteristics
5.4Weightedterminalcouplingloss(TCLw)
5.5Acousticsafetyoftelephoneuser
6Speakerphonesetstechnicalrequirements
6.1Loudspeakersendingcharacteristics
6.2Speakerphonesetreceivingcharacteristics
6.3Weightedterminalcouplingloss
6.4Switchingcharacteristics
6.5Doubletalkperformance
6.6Backgroundnoisetransmissionandcomfortnoise
injection
6.7Delay