Method and apparatus for overriding a call forwarding service of a mobile device

A mobile switching center, comprising:

• computer readable program code components configured to cause transmitting a first send routing information message from a mobile switching center to a home location register, wherein the send routing information message requests routing information for the mobile device in response to a call to the mobile device;
• computer readable program code components configured to cause processing at the mobile switching center a first send routing information acknowledgement message, wherein the first send routing information acknowledgment message is received from the home location register in response to the first send routing information message and includes location information of a call forwarding number of the mobile device;
• computer readable program code components configured to cause determining at the mobile switching center, in response to the first send routing information acknowledgement message, that a call to the call forwarding number of the mobile device was not answered;
• computer readable program code components configured to cause transmitting a second send routing information message from the mobile switching center to the home location register in response to determining that the call to the call forwarding number of the mobile device was not answered;
• and
• computer readable program code components configured to cause processing at the mobile switching center a second send routing information acknowledgement message, wherein the second send routing information acknowledgement message is received from the home location register in response to the second send routing information message and includes location information of the mobile device.

A mobile switching center, comprising:

• means for transmitting a first send routing information message from a mobile switching center to a home location register, wherein the send routing information message requests routing information for the mobile device in response to a call to the mobile device;
• means for processing at the mobile switching center a first send routing information acknowledgement message, wherein the first send routing information acknowledgment message is received from the home location register in response to the first send routing information message and includes location information of a call forwarding number of the mobile device;
• means for determining at the mobile switching center, in response to the first send routing information acknowledgement message, that a call to the call forwarding number of the mobile device was not answered;
• means for transmitting a second send routing information message from the mobile switching center to the home location register in response to determining that the call to the call forwarding number of the mobile device was not answered;
• and
• means for processing at the mobile switching center a second send routing information acknowledgement message, wherein the second send routing information acknowledgement message is received from the home location register in response to the second send routing information message and includes location information of the mobile device.