Intellectual Property Rights
Foreword
1 Scope
2 References
3 Definitions and abbreviations
3.1 Definitions
3.2 Abbreviations
4 General considerations
4.1 Services covered
4.2 Reporting for different classes of customers
4.3 Non standard levels of QoS
4.4 Reporting for directly- and indirectly-serviced customers
4.5 Data processing issues
4.6 Data collection period
4.7 Sampling and test calls
5 QoS parameters
5.1 Supply time for initial connection
5.2 Faults rate per access line
5.3 Fault repair time
5.4 Unsuccessful call ratio
5.5 Call set up time
5.6 Response times for operator services
5.7 Response times for directory enquiry services
5.8 Proportion of card and coin operated public pay-telephones
in working order
5.9 Bill correctness complaint
Annex A (normative): Combination of weekly or monthly results
Annex B (normative): Further explanation of "fastest X %"
Annex C (normative): Relationship between the accuracy of the
estimator of the unsuccessful call ratio and the number
of calls to be observed
Annex D (normative): Method of calculating the number of
observations required for measures of time
Annex E (normative): Proforma for providing statistics
History