Table of Contents
1Scope
2References
3Definitions
4Abbreviationsandacronyms
5Systemreferencediagram
6Signalsandmodulation
6.1Descriptionofsignals
6.2Modulation
6.3Transmitfiltercharacteristics
7Descriptionofmessages
7.1CL-Capabilitieslist
7.2CLR-Capabilitieslist+request
7.3MR-Moderequest
7.4MS-Modeselect
7.5MP-Modeproposal
7.6ACK(1)-Acknowledge,type1
7.7ACK(2)-Acknowledge,type2
7.8NAK-EF-Negativeacknowledge,erroredframe
7.9NAK-NR-Negativeacknowledge,notready
7.10NAK-NS-Negativeacknowledge,notsupported
7.11NAK-CD-Negativeacknowledge,cleardown
7.12REQ-MS-RequestMSmessage
7.13REQ-MR-RequestMRmessage
7.14REQ-CLR-RequestCLRmessage
7.15REQ-RTX-Retransmissionmessage
8Structureofmessages
8.1Formatconvention
8.2Framestructure
8.3Framechecksequencefield
8.4Octettransparency
8.5Inter-frametimefill
9Messagecodingformat
9.1General
9.2CodingformatforparametersintheIandSfields
9.3Identificationfield(I)
9.4Standardinformationfield(S)
9.5Non-standardinformationfield(NS)
9.6Overallmessagecomposition
10G.994.1transactions
10.1Basictransactions
10.2Extendedtransactions
10.3Messagesegmentation
10.4Statetransitiondiagrams
10.5Retransmissiontransactions
11Start-up/cleardownprocedures
11.1Duplexstart-upprocedures
11.2Half-duplexstart-upprocedures
11.3Cleardownprocedure
12Errorrecoveryprocedures
13Managementinformationbase(MIB)elements
13.1Configurationparameters
AnnexA-Supportforlegacynon-G.994.1devices
AnnexB-Operationovermultiplewirepairs
AnnexC-Anoperatingmodeforuseinthesamecable
asTCM-ISDN
C.1Scope(supplementsclause1)
C.2Signalsandmodulation(pertainstoclause6)
C.3Start-up/cleardownprocedures(pertainstoclause11)
AppendixI-G.994.1samplesessions
AppendixII-Providercodecontactinformation
AppendixIII-SupportforlegacyDMT-baseddevices
AppendixIV-Procedurefortheassignmentofadditional
G.994.1parameters
IV.1Introduction
IV.2Procedure
AppendixV-Rulesforcodepointtablenumbering
Bibliography Abstract
Provides a flexible mechanism for digital subscriber line (DSL) transceivers to exchange capabilities and to select a common mode of operation. It includes parameters relating to service and application requirements as well as parameters pertinent to various DSL transceivers.
