The answer-seizure ratio (ASR) is a measurement of network quality and call success rates in
telecommunication
Telecommunication, often used in its plural form or abbreviated as telecom, is the transmission of information over a distance using electronic means, typically through cables, radio waves, or other communication technologies. These means of ...
. It is the percentage of answered telephone calls with respect to the total call volume.
[ITU SG2 Recommendation E.411: International network management - Operational guidance.]
Definition
In telecommunication an attempted call is termed a ''seizure''. The answer-seizure ratio is defined as 100 times the number of answered calls, i.e. the number of seizures resulting in an ''answer'' signal, divided by the total number of seizures:
For example, if there were 156 calls dialed of which 62 were successfully connected, then:
ASR (%) = (62
uccessful calls/ 156
ialed calls x 100 = 39.74%
Busy signal
A busy signal (or busy tone or engaged tone) in telephony is an audible call-progress tone or audible signal to the calling party that indicates failure to complete the requested connection of that particular telephone call.
The busy signa ...
s and other call rejections by the telephone network count as call failures. However, the inclusion in the ASR accounting of some failed calls varies in practical applications. This makes the ASR highly dependent on end-user action. Low answer-seizure ratios may be caused by far-end switch congestion, not answering by called parties and busy destination circuits.
An exceptionally good ASR score would be 60% or above. 40% – 50% is considered acceptable. Anything below 40% is considered quite poor.
See also
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Network Effectiveness Ratio
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Call detail record
A call detail record (CDR) is a data record produced by a telephone exchange or other telecommunications equipment that documents the details of a telephone call or other telecommunications transactions (e.g., text message) that passes through th ...
*
Average call duration
The average call duration (ACD) is a measurement in telecommunications that reflects an average length of telephone calls transmitted on telecommunication networks. It may be calculated by dividing the total length of calls by the number of calls.
...
References
Telephony
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