Methods and apparatus for detection and mitigation of robocalls

A system of processing calls to a customer, the system comprising:

• a suspect robocall detector device including:
• a first processor configured to control the suspect call detector device to process call records of said customer to identify calls which are possibly from a robocaller, based on at least one of i) a call characteristic or ii) a call pattern, said call pattern including at least one of an error rate, call rate, call diversity or start-to-start time between adjacent calls from a call source, each identified call having a calling party number, and
• a first memory;
• a suspect robocall database for storing calling party source identification information of the identified calls which are possibly from a robocaller;
• a call processing device including:
• a second processor configured to operate the call processing device to:
• process an incoming call, said process an incoming call including comparing calling party source identification information of an incoming call to the calling party source identification information in the suspect robocall database;
• and
• complete the incoming call in a standard manner if the incoming call is not in the suspect robocall database;
• and
• handle the incoming call as a suspect robocall if the incoming calling party source identification information is in the suspect robocall database.

The system of system embodiment 19 wherein said suspect robocall detector first processor is further configured to control said suspect robocall detector to:

• generate a call classification model to be used to identify possible robocalls, said generate a call classification model including:
• accessing a set of call detail records (CDRs) of the enterprise for a period of time;
• comparing calling party numbers in the accessed call records to the calling party numbers in at least one database of reported robocallers to identify calls which are from known or likely robocallers, said identified calls being a set of previously received suspect robocalls;
• generating from the call detail records of the set of previously received suspect robocalls, call pattern information indicative of a suspect robocall.