Prevention of call loops for wholesale voip traffic termination

A system for detecting a call loop comprising a processor, a memory storing program instructions and data and accessible by the processor, and program instructions stored in the memory for performing:

• receiving an originated call;
• determining whether an origination phone number of the originated call is a valid phone number;
• when the origination phone number is invalid, determining a number of calls in a Provisional State with an invalid origination number and the same destination number that were started during a time interval;
• when the origination phone number is valid, determining a number of calls with the same origination number and the same destination number that were started, but not answered, during the time interval;
• and
• when the number of calls per time interval exceeds a threshold for the number of calls, determining that a call loop has been detected.

A computer program product for detecting a call loop comprising a non-transitory, computer-readable medium and program instructions recorded on the medium, that when executed by a processor, perform:

• receiving an originated call;
• determining whether an origination phone number of the originated call is a valid phone number;
• when the origination phone number is invalid, determining a number of calls in a Provisional State with an invalid origination number and the same destination number that were started during a time interval;
• when the origination phone number is valid, determining a number of calls with the same origination number and the same destination number that were started, but not answered, during the time interval;
• and
• when the number of calls per time interval exceeds a threshold for the number of calls, determining that a call loop has been detected.