ITU M.1016:1988
ITU M.1016:1988 Assessment Of The Service Availability Performance Of International Leased Circuits
Table of Contents
1General2Basisofassessmentsofserviceavailability
performance
3Purposeoftheassessmentprocedure
3.1General
3.2Internationalpurposes
3.3Nationalpurposes
4Descriptionoftheassessmentprocedure
4.1Collectionofbasicdata
4.2Basicdata
4.3Observationperiod
4.4Exchangeofinformationbetweenterminal
administrations
4.5Elaborationofresults
4.6Presentationofserviceavailabilityperformance
information
4.7Treatmentofeventswhichdistortservice
availabilityperformancefigures
5Considerationsforcomparingserviceavailability
performanceinformationinternationally
ANNEXA-Rulesfordeterminingthenumberoffaults
andthedowntimetobetakenintoaccountin
assessmentsoftheserviceavailable
ANNEXB-Presentationofserviceavailability
performanceinformationforinternational
leasedcircuits
B.1Determinationofthenumberofcircuitsinvolved
intheassessment
B.2Meandowntimepercircuit
B.3Meannumberoffaultspercircuit
B.4Meantimetofailure
B.5Percentageofcircuitsforwhichnodowntime
wasrecorded
B.6Meantimetorestoreservice
B.7Long-termmeandowntimepercircuit
B.8Percentageofcircuitswithdowntimelessthan
themeanvalue
B.9Downtimepercircuitnotexceededby95%of
circuits
ANNEXC-Additionalinformationtobeexchangedbetween
administrationsconcerningserviceavailability
performance
C.1Typesofinformation
C.2Rulesforthecombinationofadditional
informationcomingfromthecontroland
sub-controlstations
References