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ITU M.1050:1998

ITU M.1050:1998 Lining Up An International Point-to-point Leased Circuit With Analogue Presentation To The User Gives two methodologies for ensuring effective lining up of an international leased circuit with analogue presentation to the user.

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Table of Contents

1Scope
2References
3Terminologyanddefinitions
4Abbreviations
5General
6Lininguptoconstituentpartsofthecircuit
6.1Nationalsections
6.1.1Overalllossatreferencefrequency
6.1.2Loss/frequencydistortion(special
qualitycircuitsonly)
6.1.3Group-delaydistortion(specialquality
circuitsonly)
6.2Internationalsection
6.2.1Overalllossatreferencefrequency
6.2.2Loss/frequencydistortion
6.2.3Group-delaydistortion(specialquality
circuitsonly)
6.3Internationallink
7Lininguptheoverallcircuit
7.1Overallloss
7.2Loss/frequencydistortion
7.2.1Ordinaryqualitycircuits
7.2.2Specialqualitycircuits
7.3Group-delaydistortion(specialqualitycircuits
only)
7.4Variationwithtimeoftheoveralllossat1020Hz
7.4.1Amplitudehits(specialqualitycircuits
only)
7.4.2Othervariations
7.5Randomcircuitnoise
7.6Impulsivenoise(specialqualitycircuitsonly)
7.7Phasejitter(specialqualitycircuitsonly)
7.8Totaldistortion(specialqualitycircuitsonly)
7.9Singletoneinterference(specialquality
circuitsonly)
7.10Frequencyerror(specialqualitycircuitsonly)
7.11Harmonicandintermodulationdistortion(special
qualitycircuitsonly)
7.12Crosstalk(specialqualitycircuitsonly)
7.13Powersourceinterferences(specialqualitycircuits
only)
8Section-by-sectionline-up
8.1Lininguptheanalogue-type-section
8.1.1Nationalsections
8.1.2Internationalsection
8.2Liningupthedigital-typesection
8.2.1Nationalsections
8.2.2Internationalsection
8.3Overallcircuit
8.3.1Configurationandtestingofdigital-type
sectionsboundedbyA/Dconverters
8.3.2Overalllineup
9Additionalreferencemeasurements
10Functionalchecks
11Transmissionlevelchecks
12Levellimiters
13Markingofequipmentassociatedwithspecialquality
circuits
14Short-timereroutingofspecialqualityleasedcircuits

Abstract

Gives two methodologies for ensuring effective lining up of an international leased circuit with analogue presentation to the user.

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