How to setup and alert (threshold) for toll fraud and transit calls. ?
What would be your criteria for toll fraud being comitted? Calls to a certain number/trunk group? Toll fraud can be comitted in multiple ways but not sure how you could use prognosis to highlight these examples.
Transit calls are expected as we have trunks connecting our pstn to our conf bridge or expressway via SIP trunks. What I’m looking for is to alert on calls to specific unwanted area codes from a specific trunk (or set of trunks) and exiting the trunks to the PSTN routers.
These are some of the many patterns I have blocked in CUCM.
8.1441XXXXXXX Blocked - Bermuda CDI-NATIONAL-PT CDI-SLRGL
8.441XXXXXXX Blocked - Bermuda CDI-NATIONAL-PT CDI-SLRGL
\+.1441XXXXXXX Blocked - Bermuda CDI-NATIONAL-PT CDI-SLRGL
8.1900XXXXXXX Blocked - 900 numbers CDI-NATIONAL-PT CDI-SLRGL
8.900XXXXXXX Blocked - 900 numbers CDI-NATIONAL-PT CDI-SLRGL
I’m watching these trunks:
CDI-VCS-SIP-TRUNK Tandberg VCS in Teterboro (VCSCLUSTER)
CDI-CUBE-TB CDI Teterboro CUBE – 2921
CDI-CUBE-WBR CDI WBR Parsippany CUBE – 2811
I would want Transit Call to alert when a number in a blocked area code initiates from the CDI-VCS-SIP-TRUNK heading toward CUCM and attempts to leave via CDI-CUBE-TB.