Voiding calls to signal supplementary services

A service control point configured to:

• receive, from a mobile switching center, an indication that:
• a request to initiate a telephone call was received from a mobile telephone, the request comprising a source address and a destination address,
• a request to terminate the telephone call was received from the mobile telephone before the mobile switching center associated with the source address initiated a process to establish a traffic channel with a destination mobile switching center associated with the destination address and prior to destination address traffic channel allocation,
• the request to terminate the telephone call was received within a predetermined amount of time following the receipt of the request to initiate the telephone call, and
• the voice telephony connection between the source address and the destination address has not been established;
• responsive to receiving the indication, generate a supplementary service message,
• wherein the supplementary service message comprises a request to initiate a telephone call from the destination address to the source address;
• and
• transmit the supplementary service message to at least one of the source address and the destination address.

A non-transitory computer-readable medium comprising computer-executable instructions, which when executed by a processor, cause the processor to perform operations comprising:

• receiving, from a mobile switching center, an indication that:
• a request to initiate a telephone call was received from a mobile telephone, the request comprising a source address and a destination address,
• a request to terminate the telephone call was received from the mobile telephone before the mobile switching center associated with the source address initiated a process to establish a traffic channel with a destination mobile switching center associated with the destination address and prior to destination address traffic channel allocation,
• the request to terminate the telephone call was received within a predetermined amount of time following the receipt of the request to initiate the telephone call, and
• the voice telephony connection between the source address and the destination address has not been established;
• responsive to receiving the indication, generating a supplementary service message, wherein the supplementary service message comprises a request to initiate a telephone call from the destination address to the source address;
• and
• transmitting the supplementary service message to at least one of the source address and the destination address.