ITU M.3604:1992
ITU M.3604:1992 Application Of Maintenance Principles To Isdn Primary Rate Access Defines capabilities and functions used by the network to maintain the physical layer of ISDN primary rate access.
Table of Contents
1Scopeofapplication2Networkconfigurationformaintenanceactivities
3Failuredetection
3.1General
3.2Automaticsupervision
3.3Automaticsupervisionoflayers2and3ofthe
D-channelprotocol
3.4Continuitytest
4Systemprotection
5Failureindication
5.1Defaultindicationsignals
5.2Statetables
5.3Generationofdefectindicationsignalsbythe
NT2
5.4Generationofdefectindicationsignalsbythe
subscriberaccess
5.5Generationofdefectindicationsignalsbythe
exchangetermination
5.6Transmissionqualitymonitoringbytheexchange
5.7Failureinformationfromtheexchange
5.8Failureinformationtothesubscriber
installation
6Failurelocalization
6.1Automaticconfirmationoffailurewithinthe
subscriberprimaryrateaccess
6.2Failedmaintenanceentityidentification
6.3Loop-backsformaintenanceofthesubscriber
primaryrateaccess
6.4Failurelocalizationmechanisms
7Logisticdelaytime
8Failurecorrection
9Verification
10Restoration
11Overallperformancemeasurements
ANNEXA-Subscriberaccessoption
A.1DigitallinkwithoutCRCprocessing(option1)
A.2DigitallinkwithCRCprocessingintheNT1
(option2)
A.3DigitallinkwithCRCprocessingintheLTand
NT1(option3)
A.4DigitallinkwithCRCmonitoringintheNT1
(option4)
ANNEXB-Othernetworkconfigurations
B.1Digitalcross-connectsystem
B.2Primaryrateleasedcircuit
ANNEXC-Digitalcross-connectsystemconsiderations
forISDN
References