Patent ID: 7610042
Filing Date: 2009-10-27
Classification: H04W

Abstract:
1. A method comprising: sending a message from a source telephone to a message center if a message indication is received by the source telephone from the message center in response to a call from the source telephone directed to a target telephone, wherein the message center saves the message; recording the message to an overlay message in an overlay package at the source telephone if a first signal strength of a transmission between the source telephone and the message center during the sending is below a low signal-strength threshold, wherein the overlay package further comprises: a source telephone identifier, a target telephone identifier, and a time that the message was sent to the message center; after the recording, determining whether a second signal strength between the source telephone and the message center exceeds a high signal-strength threshold; and sending the overlay package from the source telephone to the message center if the second signal strength exceeds the high signal-strength threshold and if the overlay message was recorded, wherein the message center receives the overlay package from the source telephone and replaces the message with the overlay message if the message exists at the message center, wherein the message exists at the message center if the message has not been deleted in response to a request from the target telephone.