ITU-T G.962 Amendment 1 (06 1997) (英) Maintenance channel

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1、INTERNATIONALTELECOMMUNICATIONUNION)45 4'TELECOMMUNICATION!MENDMENTSTANDARDIZATIONSECTOROFITU(06/97)SERIESG:TRANSMISSIONSYSTEMSANDMEDIA,DIGITALSYSTEMSANDNETWORKSDigitaltransmissionsystems–Digitalsectionsanddigitallinesystem–Digitalsectionanddigitaltransmissionsys

2、temsforcustomeraccesstoISDNAccessdigitalsectionforISDNprimaryrateat2048kbit/s!MENDMENT-AINTENANCECHANNELITU-TRecommendationG.962–Amendment1(PreviouslyCCITTRecommendation)ITU-TG-SERIESRECOMMENDATIONS42!.3-)33)/.3934%-3!.$-%$)!$)')4!,3934%-3!.$.%47/2+3INTERNA

3、TIONALTELEPHONECONNECTIONSANDCIRCUITSG.100–G.199).4%2.!4)/.!,!.!,/'5%#!22)%23934%-GENERALCHARACTERISTICSCOMMONTOALLANALOGUECARRIER-G.200–G.299TRANSMISSIONSYSTEMSINDIVIDUALCHARACTERISTICSOFINTERNATIONALCARRIERTELEPHONEG.300–G.399SYSTEMSONMETALLICLINESGENERALCHARACTER

4、ISTICSOFINTERNATIONALCARRIERTELEPHONEG.400–G.449SYSTEMSONRADIO-RELAYORSATELLITELINKSANDINTERCONNECTIONWITHMETALLICLINESCOORDINATIONOFRADIOTELEPHONYANDLINETELEPHONYG.450–G.49942!.3-)33)/.-%$)!#(!2!#4%2)34)#3G.600–G.699$)')4!,42!.3-)33)/.3934%-3TERMINALEQUIPMENTSG.70

5、0–G.799GeneralG.700–G.709CodingofanaloguesignalsbypulsecodemodulationG.710–G.719CodingofanaloguesignalsbymethodsotherthanPCMG.720–G.729PrincipalcharacteristicsofprimarymultiplexequipmentG.730–G.739PrincipalcharacteristicsofsecondordermultiplexequipmentG.740–G.749Princi

6、palcharacteristicsofhigherordermultiplexequipmentG.750–G.759PrincipalcharacteristicsoftranscoderanddigitalmultiplicationequipmentG.760–G.769Operations,administrationandmaintenancefeaturesoftransmissionequipmentG.770–G.779Principalcharacteristicsofmultiplexingequipmentf

7、orthesynchronousdigitalG.780–G.789hierarchyOtherterminalequipmentG.790–G.799DIGITALNETWORKSG.800–G.899GeneralaspectsG.800–G.809DesignobjectivesfordigitalnetworksG.810–G.819QualityandavailabilitytargetsG.820–G.829NetworkcapabilitiesandfunctionsG.830–G.839SDHnetworkchara

8、cteristicsG.840–G.849TelecommunicationsmanagementnetworkG.850–G.859DIGITALSECTIONSANDDIGITALLINESYSTEMG.900–G.999Gene