ITU G.991.2:2003
ITU G.991.2:2003 Single-pair High-speed Digital Subscriber Line (shdsl) Transceivers Describes a transmission method for data transport in telecommunications access networks.
Table of Contents
1Scope2References
3Definitionsandabbreviations
3.1Definitions
3.2Abbreviations
4Referencemodels
4.1STU-xfunctionalmodel
4.2Userplaneprotocolreferencemodel
4.3Applicationmodels
5Transportcapacity
6PMDlayerfunctionalcharacteristics
6.1Datamodeoperation
6.2PMDactivationsequence
6.3PMDpre-activationsequence
6.4G.994.1pre-activationsequence
7PMS-TClayerfunctionalcharacteristics
7.1Datamodeoperation
7.2PMS-TCactivation
8TPS-TClayerfunctionalcharacteristics
8.1Payloadblockdatastructure
8.2DatainterleavinginM-pairmode
9Management
9.1Managementreferencemodel
9.2SHDSLperformanceprimitives
9.3SHDSLlinerelatedperformanceparameters
9.4Performancedatastorage
9.5Embeddedoperationschannel
10Clockarchitecture
10.1Referenceclockarchitecture
10.2Clockaccuracy
10.3Definitionsofclocksources
10.4Synchronizationtoclocksources
11Electricalcharacteristics
11.1Longitudinalbalance
11.2Longitudinaloutputvoltage
11.3Returnloss
11.4Transmitpowertesting
11.5Signaltransferdelay
12Conformancetesting
12.1Micro-interruptions
AnnexA-Regionalrequirements-Region1
A.1Scope
A.2Testloops
A.3Performancetests
A.4PSDmasks
A.5Region-specificfunctionalcharacteristics
AnnexB-Regionalrequirements-Region2
B.1Scope
B.2Testloops
B.3Performancetesting
B.4PSDmasks
B.5Region-specificfunctionalcharacteristics
AnnexC-Regionalrequirements-Region3
AnnexD-Signalregeneratoroperation
D.1Referencediagram
D.2Start-upprocedures
D.3Symbolrates
D.4PSDmasks
AnnexE-Application-specificTPS-TCframing
E.1TPS-TCforclearchanneldata
E.2TPS-TCforclearchannelbyte-orienteddata
E.3TPS-TCforunalignedDS1transport
E.4TPS-TCforalignedDS1/fractionalDS1transport
E.5TPS-TCforEuropean2048kbit/sdigitalunstructured
leasedline(D2048U)
E.6TPS-TCforunalignedEuropean2048kbit/sdigital
structuredleasedline(D2048S)
E.7TPS-TCforalignedEuropean2048kbit/sdigital
structuredleasedline(D2048S)andfractional
E.8TPS-TCforsynchronousISDNBRA
E.9TPS-TCforATMtransport
E.10DualbearerTPS-TCmode
E.11TPS-TCforPTMtransport
E.12TPS-TCforSTMwithaDedicatedSignalling
Channel(DSC)
E.13TPS-TCforLAPV5envelopedPOTSorISDN
AnnexF-Region1requirementsforpayloaddataratesup
to5696kbit/s
F.1Scope
F.2Datarate
F.3Mapper
F.4PSDmasks
F.5Crosstalkinterferencerequirements
F.6Functionalcharacteristics
AnnexG-ReservedforRegion2requirementsfordatarates
between2320kbit/sand**maxrate**
AnnexH-Deactivationandwarm-startprocedure
H.1Deactivationtoreducedpowermode
H.2Warm-startactivation
AppendixI-Testcircuitexamples
I.1Examplecrosstalkinjectiontestcircuit
I.2Examplecouplingcircuitsforlongitudinalbalance
andlongitudinaloutputvoltage
I.3Returnlosstestcircuit
I.4TransmitPSD/totalpowermeasurementtestcircuit
AppendixII-Typicalcharacteristicsofcables
II.1TypicalcharacteristicsofcablesforAnnexB
AppendixIII-Signalregeneratorstart-updescription
III.1STU-RinitiatedStart-up
III.2STU-Cinitiatedstart-up
III.3SRUinitiatedstart-up
III.4Collisionsandretrains
III.5Diagnosticmodeactivation
AppendixIV-TabulationofAnnexBnoiseprofiles
BIBLIOGRAPHY