| 摘要 |
<p>A call processing apparatus operable, in respect of incoming calls which are routed to respective agents selected from a cohort of two or more agents, to detect whether an incoming call represents a second or subsequent call by the same caller within a predetermined time period, comprises a caller identification detector operable to detect identification data associated with an apparatus from which each call is being made; and a comparator operable to compare the detected identification data so as to detect whether a second or subsequent call is made with the same identification data within the predetermined time period; in which the comparator is operable to ignore detected identification data in an identification data blacklist. A so-called black list is maintained, such that the blacklist includes those telephone numbers (Automatic Number Identification (ANI) values) which correspond to false or ambiguous ANIs. An ANI detects the ANI of each incoming call but excludes or ignores any ANI value contained in the blacklist (120 Fig 3).</p> |
