The connection or disconnection status of the call, such as
alerting, active and release
4.4.8 PRI Call Statistics
On the PRI Call Statistics interface, information about PRI calls and statistics about call
release causes are displayed.
ASR (Answer-seizure Ratio): is a call success rate, which reflects the percentage of
answered telephone calls with respect to the total call volume. ASR = answered call/total
attempts of calls.
ACD (Average Call Duration): is a measurement in telecommunication, which reflects an
average length of telephone calls transmitted on telecommunication networks. ACD = total
call duration/total connected calls.