ITU-T G.113 (11 2007) (英) Transmission impairments due to speech……

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1、InternationalTelecommunicationUnionITU-TG.113TELECOMMUNICATION(11/2007)STANDARDIZATIONSECTOROFITUSERIESG:TRANSMISSIONSYSTEMSANDMEDIA,DIGITALSYSTEMSANDNETWORKSInternationaltelephoneconnectionsandcircuits–GeneralRecommendationsonthetransmissionqualityfor

2、anentireinternationaltelephoneconnectionTransmissionimpairmentsduetospeechprocessingITU-TRecommendationG.113ITU-TG-SERIESRECOMMENDATIONSTRANSMISSIONSYSTEMSANDMEDIA,DIGITALSYSTEMSANDNETWORKSINTERNATIONALTELEPHONECONNECTIONSANDCIRCUITSG.100–G.199Generald

3、efinitionsG.100–G.109GeneralRecommendationsonthetransmissionqualityforanentireinternationalG.110–G.119telephoneconnectionGeneralcharacteristicsofnationalsystemsformingpartofinternationalconnectionsG.120–G.129Generalcharacteristicsofthe4-wirechainformed

4、bytheinternationalcircuitsandnationalG.130–G.139extensioncircuitsGeneralcharacteristicsofthe4-wirechainofinternationalcircuits;internationaltransitG.140–G.149GeneralcharacteristicsofinternationaltelephonecircuitsandnationalextensioncircuitsG.150–G.159A

5、pparatusassociatedwithlong-distancetelephonecircuitsG.160–G.169TransmissionplanaspectsofspecialcircuitsandconnectionsusingtheinternationaltelephoneG.170–G.179connectionnetworkProtectionandrestorationoftransmissionsystemsG.180–G.189Softwaretoolsfortrans

6、missionsystemsG.190–G.199GENERALCHARACTERISTICSCOMMONTOALLANALOGUECARRIER-G.200–G.299TRANSMISSIONSYSTEMSINDIVIDUALCHARACTERISTICSOFINTERNATIONALCARRIERTELEPHONEG.300–G.399SYSTEMSONMETALLICLINESGENERALCHARACTERISTICSOFINTERNATIONALCARRIERTELEPHONESYSTEM

7、SG.400–G.449ONRADIO-RELAYORSATELLITELINKSANDINTERCONNECTIONWITHMETALLICLINESCOORDINATIONOFRADIOTELEPHONYANDLINETELEPHONYG.450–G.499TRANSMISSIONMEDIAANDOPTICALSYSTEMSCHARACTERISTICSG.600–G.699DIGITALTERMINALEQUIPMENTSG.700–G.799DIGITALNETWORKSG.800–G.89

8、9DIGITALSECTIONSANDDIGITALLINESYSTEMG.900–G.999QUALITYOFSERVICEANDPERFORMANCE–GENERICANDUSER-RELATEDG.1000–G.1999ASPECTSTRANSMISSIONMEDIACHARACTERISTICSG.6000–G.6999DATAOVERTRANSPORT–GENERICASPECTSG.7000–G.7999PACKETOVERTRANSPORTASPECTS