ITU I.431:1993
ITU I.431:1993 Primary Rate User-network Interface - Layer 1 Specification
Table of Contents
1Introduction1.1Scopeandfieldofapplication
2Typeofconfiguration
2.1Point-to-point
2.2Locationofinterfaces
3Functionalcharacteristics
3.1Summaryoffunctions(layer1)
3.2Interchangecircuits
3.3Activation/deactivation
3.4Operationalfunctions
4Interfaceat1544kbit/s
4.1Electricalcharacteristics
4.2Framestructure
4.3Timingconsiderations
4.4Timeslotassignment
4.5Jitter,wanderandphasetransients
4.6Interfaceprocedures
4.7Maintenance
5Interfaceat2048kbit/s
5.1Electricalcharacteristics
5.2Framestructure
5.3Timingconsiderations
5.4Jitter
5.5Tolerablelongitudinalvoltage
5.6Outputsignalbalance
5.7Impedancetowardsground
5.8Interfaceprocedures
5.9Maintenanceattheinterface
6Connector
7Interfacewiring
8Powerfeeding
8.1Provisionofpower
8.2PowerConsumption
8.3Voltagerange
8.4Protection
AnnexATimeslotassignmentforinterfaceshavingonly
H-channels
A.11544kbit/sinterface
A.22048kbit/sinterface
AnnexBTimeslotassignmentfor2048kbit/sinterfaces
havinganH-channel
AppendixI-Pulsemaskforinterfaceat1544kbit/s