Table of Contents
1General
2Servicecharacteristics
2.1Servicesrequiredfromthephysicalmedium
2.2Serviceprovidedtolayer2
2.3Primitivesbetweenlayer1andtheotherentities
3Modesofoperation
3.1Point-to-pointoperation
3.2Point-to-multipointoperation
4Typesofwiringconfiguration
4.1Point-to-pointconfiguration
4.2Point-to-multipointconfiguration
4.3Wiringpolarityintegrity
4.4Locationoftheinterfaces
4.5NTandTEassociatedwiring
5Functionalcharacteristics
5.1Interfacefunctions
5.2Interchangecircuits
5.3Connected/disconnectedindication
5.4Framestructure
5.5Linecode
5.6Timingconsiderations
6Interfaceprocedures
6.1D-channelaccessprocedure
6.2Activation/deactivation
6.3Framealignmentprocedures
6.4IdlechannelcodeontheB-channels
7Layer1maintenance
7.1Provisionforoperationalandmaintenancefunctions
betweenterminalandNT1
8Electricalcharacteristics
8.1Bitrate
8.2Jitterandbit-phaserelationshipbetweenTEinput
andoutput
8.3NTjittercharacteristics
8.4Terminationoftheline
8.5Transmitteroutputcharacteristics
8.6Receiverinputcharacteristics
8.7Isolationfromexternalvoltage
8.8Interconnectionmediacharacteristics
8.9StandardISDNbasicaccessTEcord
8.10Longitudinaloutputvoltage
8.11Electromagneticcompatibility(EMC)
9Powerfeeding
9.1Referenceconfiguration
9.2PoweravailablefromNT
9.3PoweravailableatTE
9.4PS1currenttransient
9.5TEpowerconsumption
9.6Galvanicisolation
9.7Limitationonpowersourceandsinkduringtransient
condition
9.8PS1directcurrentunbalance
9.9Additionalrequirementsforanauxiliarypower
powersupply(APS)
9.10AdditionalrequirementsforNT1restrictedmode
sourceforcompatibilitywithandAPS
10Interfaceconnectorcontactassignments
AnnexA-Wiringconfigurationsandroundtripdelay
considerationsusedasabasisforelectrical
characteristics
A.1Introduction
A.2Wiringconfigurations
AnnexB-SDLrepresentationofapossibleimplementationof
theD-channelaccess
AnnexC
AnnexD-Testconfiguration
AppendixITestingmethods
I.1Introduction
I.2D-channeltests
I.3Interfaceproceduretests
I.4TEjittercharacteristics
I.5Pulseshapeandamplitude
I.6Terminalpowerfeedingdynamicrequirements
I.7Powersourcedynamicrequirements
I.8APSDynamicrequirements
I.9Testingforcurrentunbalance
AppendixIIGuidelinesforimplementation
II.1Powerfeeding
II.2Informationonactivationanddeactivationtables Abstract
Defines the layer 1 characteristics of the user-network interface at S- and T-reference points for basic rate ISDN as defined in Recommendation I.412. It defines service characteristics, mode of operation, wiring configuration and functional characteristics. The transmission characteristics, frame structure, line code and activation procedure at the interface are specified to facilitate the access of user equipment to the 2B- + D-channel at a bit rate of 192 kbit/s.
