System for managing telecommunications
View Patent ↗The invention includes a system for processing telecommunications signaling. Signaling for a call is received into a signaling processor. The signaling processor processes the call and generates new signaling incorporating the processing. The new signaling is transferred to network elements as appropriate. The signaling processor is not coupled to a switch matrix and only communicates with the network elements over signaling links.
1. A method of operating a call processing system to handle a call placed to a called telephone number from a caller having a caller telephone number, the method comprising:
receiving call set-up signaling for the call;
processing the called telephone number from the call set-up signaling to determine if the called telephone number is a toll-free number;
if the called telephone number is not the toll-free number, then checking the caller telephone number in a validation table to determine if the call should be allowed;
if the call should be allowed based on the validation table, then processing the called telephone number to select a route for the call;
if the called telephone number is the toll-free number, then processing the called telephone number to select the route for the call without checking the caller telephone number in the validation table;
after selecting the route for the call, generating and transferring a message indicating the route selected for the call.
2. The method of claim 1 wherein the set-up signaling comprises a Signaling System #7 Initial Address Message.