# The Telecommunications (Voice Telephony) Regulations 1997, Schedule 3: SUPPLY TIME AND QUALITY OF SERVICE INDICATORS IN ACCORDANCE WITH THE REQUIREMENTS OF ARTICLE 5 OF THE VOICE TELEPHONY DIRECTIVE


The following list specifies areas where quality-of-service indicators are required for relevant Licensees:
supply time for initial network connection,
fault rate per connection,
fault repair time,
call failure rates,
dial tone delay,
call set up delay,
transmission quality statistics,
response times for operator services,
the proportion of coin and card-operated public pay-telephones run by the Licensee (whether under the relevant Licence or under any other Licence granted under section 7 of the Act) which are in working order,
billing accuracy.

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Source: https://www.legislation.gov.uk/uksi/1997/1886/schedule/3 (the official version)
Page: https://openlegislation.uk/telecommunications-voice-telephony-regulations-1997/schedule-3
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.