Patent ID: 11909911
Assignee: MEZMO CORPORATION
Field: Telecommunications (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 12:
13. The system of claim 11, wherein, when the peer places a return call directed to the first phone number using a communications device, the communications device of the peer is connected to the carrier of the first phone number and, upon checking the first phone number, the carrier of the first phone number is configured to route the return call to the C-CTSS,
wherein the return call includes a return call setup message from the carrier of the first phone number, and wherein the C-CTSS is further configured to:
receive the return call setup message from the carrier of the first phone number;
add or modify a parameter of the return call setup message during a return call setup procedure of the return call to prevent the carrier from re-routing the return call to the C-CTSS; and
route the return call to the carrier of the first phone number,

upon receiving the return call from the C-CTSS and checking the added or modified parameter of the return call setup message, the carrier of the first phone number routes the return call to mobile communications device of the first phone number.