Table of Contents
1Scope
2References
3Termsanddefinitions
4Abbreviations
5Conventions
6DescriptionoftheDTE/DCEinterface(physicallayer)
6.1ITU-TX.21interface
6.2X.21bisinterface
6.3V-Seriesinterfaces
6.4G-Seriesinterfaces
6.5I-Seriesinterfaces
7Descriptionofservices
7.1Generaldefinition
7.2Multiplexing
7.3Serviceaspect
7.4Frametransferpriority
7.5Framediscardpriority
7.6Framerelayserviceclass
7.7Supportofbothserviceclassandpriorities
7.8SVCrelatedservices
8Serviceparametersandservicequality
8.1Scope
8.2Serviceparameters
8.3SVCrelatedserviceparameters
8.4Servicequality
9Datalinktransfercontrol
9.1General
9.2Frameformat
9.3Addressing
9.4Transmissionconsideration
9.5FramerelaydatatransmissionserviceoverSDH
9.6Fragmentation
10Callconnectioncontrol
10.1General
10.2Signallingchannel
10.3Listofthesignallingchannellinklayerparameters
10.4Callstates
10.5Messagedefinitions
10.6Generalmessageformatandinformationelementcoding
10.7Callestablishmentandclearingprocedures
10.8Statusenquiryandstatusprocedures
10.9Restartprocedure
10.10Handlingoferrorconditions
10.11Listoftimers
10.12Closedusergroupfacility
10.13Transitnetworkselectionfacility
10.14Reversechargingfacility
10.15FrameTransferpriority
10.16FrameDiscardpriority
10.17FrameRelayServiceClass
10.18SupportofbothServiceClassandPriorities
10.19Charginginformation
11PVCmanagementprocedures
11.1Overview
11.2Messagedefinition
11.3Messagespecificinformationelements
11.4Descriptionofprocedures
11.5Optionalbidirectionalnetworkprocedures
11.6Systemparameters
12Congestioncontrol
12.1General
12.2Impactofcongestion
12.3Congestionnotification
12.4DTEcongestiondetectionmethodandactions
AnnexA-ListandstatusoftheX.36parameters
AnnexB-FunctionalsupportattheDTE/DCEinterface
B.1ProtocolCapabilities(PC)
B.2Framesprotocoldataunits(FR)
B.3SystemParameters(SP)
AnnexC-ConsolidatedLinkLayerManagement(CLLM)message
C.1Addressoctets
C.2Controlfield
C.3XIDinformationfield
C.4FCSfield
C.5NetworkCLLMmessagetransmissionprocedure
AnnexD-Useofframerelayformultiprotocolencapsulation
D.1GeneralFrameFormat
D.2FrameFormatforISOCLNP(ISO8473)
D.3FrameFormatforIP
D.4FrameFormatforprotocolswithEthertypecodepoint
D.5FrameFormatforbridgedpackets
D.6Lowlayercompatibilitynegotiationprocedures
D.7Examples
D.8Protocolencapsulationformat
AnnexE-Usageofcauseandlocation
E.1Locationfieldgeneration
E.2Causevalues
E.3Codingofthediagnosticfield
AnnexF-UseofNSAPattheDTE-DCEinterface
F.1Introduction
F.2EncodingofX.121numbersasNSAP
F.3EncodingofE.164numbersasNSAP
F.4OtherATMEndSystemAddresscoding
AnnexG-EnhancementstoPVCmanagementprocedures
G.1Introduction
G.2Listofchangestoclause11
AnnexH-ProceduresdefinedinX.36clause11andQ.933AnnexA
AppendixI-ExamplesofPVCmanagementerrorevents
I.1LossofSTATUSENQUIRYmessage
I.2LossofSTATUSmessage
I.3InvalidReceiveSequenceNumber
AppendixII-DTEcongestiondetectionmethodsandactions
II.1Implicitcongestiondetection
II.2Explicitcongestiondetection
AppendixIII-Handlingofphysicallayerloopbackconditions
whenusingframerelayPVCbidirectional
procedures
III.1RecommendedproceduresforDTE/DCEthatcandetect
loopbackatthephysicallayer
III.2RecommendedproceduresforDTE/DCEthatcannotdetect
loopbackatthephysicallayer
AppendixIV-Informationonaddress
IV.1Mainaddressandcomplementaryaddress
IV.2AddressesinSETUPmessage
IV.3AddressesinCONNECTmessage
IV.4AddressesprocessingbythenetworkinSETUPmessage
IV.5AddressesprocessingbythenetworkinCONNECTmessage
AppendixV-Internationalnetworkidentificationaccording
toITU-TRec.X.125fornetworksprovidingframe
relayservicesandnumberedundertheE.164
numberingplan
V.1Introduction
V.2Assignmentandnotificationprocess
AppendixVI-CallstatediagramsattheDCEsideofthe
DTE/DCEinterfaceandDCEactions
VI.1Foreword
VI.2Symboldefinitionofthecallstatediagrams
VI.3Callstatediagrams
VI.4ActionstakenbytheDCEonreceiptofmessageina
givencallstateattheDCEsideoftheDTE/DCE
interface
AppendixVII-Windowsizeforadatalinklayerprotocol Abstract
Defines the DTE/DCE interface for public data networks providing frame relay data transmission service by dedicated circuit. Defines frame relay basic service for permanent virtual circuits; switched virtual circuits and frame relay link layer protocol for data transfer; and permanent virtual circuits management protocol and signalling for switched virtual circuits. Also defines the following network capabilities: closed user group, reverse charging, transit network selection, transfer and discard priorities and service classes, NSAP support by the network for interworking with ATM networks, multiprotocol encapsulation and selection and fragmentation at the DTE/DCE interface.
