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ITU-T E.425 (11/1998)

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Internal automatic observations
This Recommendation describes internal monitoring of network performance using specific performance parameters such as Answer Seizure Ratio (ASR) and Answer Bid Ratio (ABR). The advantages of internal monitoring is that a large volume of records can be collected which allows day-to-day evaluation of network performance.
Citation: https://handle.itu.int/11.1002/1000/4529
Series title: E series: Overall network operation, telephone service, service operation and human factors
  E.400-E.489: Network management
  E.420-E.489: Checking the quality of the international telephone service
Approval date: 1998-11-13
Approval process:TAP
Status: Superseded
Maintenance responsibility: ITU-T Study Group 12
Further details: Patent statement(s)