The invention discloses a
system and a method for monitoring a
crank call. The method comprises the following steps of: monitoring real-time call detail
record (CDR) data transmitted through a
Socket interface by a number seven signaling
monitoring system on the basis of monitoring of internet links, long-distance links and
intranet important mobile switching center (MSC) links by using the
system; analyzing the number of a suspected
crank call according to a multiple suspected
crank call filtering mechanism and corresponding filtering parameters; comparing the suspected crank call with a white
list, and if the suspected crank call exists in the white
list, deleting the number of the suspected call from a
database; submitting the number of the suspected crank call to a crank call platform if the suspected crank call does not exist in the white
list; and performing dial testing
verification on the number on the crank call platform, judging whether the suspected crank call is the crank call or not according to conversation contents, determining the home location of the number if the suspected crank call is confirmed to be the crank call, and transmitting an intercept instruction to a number home location
network management center. According to the
system and the method, the intercept rate of the crank call is increased, and the interference of the crank call is reduced.