Answer Seizure Ratio

The Answer Seizure Ratio ( ASR ) is a means in telecommunications to measure the successful throughput of calls (CSR) and thus the quality of a network. It shows the relationship between successfully placed calls and the total number of connection attempts made.

definition

In telecommunications, an attempted call is called a seizure . The Answer Seizure Ratio is the ratio of successful calls, e.g. B. the sum of all attempted calls ( seizures ), which are also answered by the other end, divided by the sum of all attempted calls.

${\ displaystyle ASR = {\ frac {\ text {successful call attempts}} {\ text {total number of call attempts}}} \ cdot 100 \, \ mathrm {\%}}$

Busy signals and other rejections by the telephone network are counted as unsuccessful calls. However, depending on the practical application, not all failed calls are always taken into account in the Answer Seizure Ratio, since it also depends on the practical application of the end user.

A low Answer Seizure Ratio can arise, for example, from overloading and excess capacity of the network switches , from unanswered calls (the called party does not pick up) or from busy destination lines.

Individual evidence

↑ tsbmail: E.411: International network management - Operational guidance. Retrieved October 28, 2017 .
↑ ITU-T Recommendation E.425: Network management - Checking the quality of the international telephone service - Internal automatic observations. March 2002, p. 3.

[1] tsbmail: E.411: International network management - Operational guidance. Retrieved October 28, 2017 .

[2] ITU-T Recommendation E.425: Network management - Checking the quality of the international telephone service - Internal automatic observations. March 2002, p. 3.