[M.1016] Recommendation M.1016 (11/88) - Assessment of the service availability performance of international leased circuits
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| | Table of Contents | ITU-T Rec. M.1016 - ASSESSMENT OF THE SERVICE AVAILABILITY PERFORMANCE OF INTERNATIONAL LEASED CIRCUITS
NOTES
ASSESSMENT OF THE SERVICE AVAILABILITY PERFORMANCE OF INTERNATIONAL LEASED CIRCUITS
1 General
2 Basis of assessments of service availability performance
3 Purpose of the assessment procedure
3.1 General
3.2 International purposes
3.3 National purposes
4 Description of the assessment procedure
4.1 Collection of basic data
4.2 Basic data
4.3 Observation period
4.4 Exchange of information between terminal Administrations
4.5 Elaboration of results
4.6 Presentation of service availability performance information
4.7 Treatment of events which distort service availability performance figures
5 Considerations for comparing service availability performance information internationally
ANNEX A - Rules for determining the number of faults and the downtime to be taken into account in assessments of the service ava
ANNEX B - Presentation of service availability performance information for international leased circuits
B.1 Determination of the number of circuits involved in the assessment
B.2 Mean downtime per circuit
B.3 Mean number of faults per circuit
B.4 Mean time to failure
B.5 Percentage of circuits for which no downtime was recorded
B.6 Mean time to restore service
B.7 Long-term mean downtime per circuit
B.8 Percentage of circuits with downtime less than the mean value
B.9 Downtime per circuit not exceeded by 95% of circuits
ANNEX C - Additional information to be exchanged between Administrations concerning service availability performance
C.1 Types of information
C.2 Rules for the combination of additional information coming from the control and sub-control stations
References
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