ITU V.38:1996
ITU V.38:1996 A 48/56/64 Kbit/s Data Circuit-terminating Equipment Standardized For Use On Digital Point-to-point Leased Circuits
Table of Contents
1Introduction2Signallingrates
2.1Datasignallingrates
2.2Signallingratesonline
3Differentiationbetweenuserandnetworkdatasignals
3.1Scrambler(64kbit/sonly)
3.2Descrambler(64kbit/sonly)
4Interfaces
4.1V.24-typeinterface
4.2X.24-typeinterface
5Rateadaptation
6Testingfacilities
6.1Testloops
6.2Selftests
7Multiplexing
8Internalmanagement
AppendixI-Functionalblockdiagram
AppendixII-Connectionschematic
AppendixIII-Rateadaptationofdatasignallingrates
below48kbit/s
III.1Datasignallingrates
III.2Rateadaptation
III.3Interfaces
AppendixIV-Exampleofimplementationofthe
transmissionunit
IV.1General
IV.2Physicalmodelofthelinetransmissionsystem
IV.3FunctionaldescriptionoftheDCE
IV.4FunctionsoftheTUfunctionalblock
IV.5Requirementsforalinetransmissionsystem
using2BIQlinecode
IV.6DCEmanagementchannel
IV.7Equipmentmanagementfunction