Patent ID: 6463144
Filing Date: 2002-10-08
Classification: H04M

Abstract:
An article of manufacture:a program medium, executable in a computer system, implementing callback for an unanswered telephone call between a called party and a calling party, comprising: a) program instructions for initiating a telephone call between the calling party and the called party through the system; b) program instructions for generating a unique call identifier number for tracking an address in a Dynamic Host Configuration Protocol used by the system; c) program instructions for generating, storing and sending a control message in a calling station callback server from a calling station to a called station in conjunction with the telephone call; d) program instructions for selecting between establishing a telephone connection between the calling party to the called party when the telephone call is answered by the called party and sending a message to delete the control message in the calling station callback server or storing the control message in a called station callback server when the telephone call is unanswered by the called party; e) program instructions for generating a message from the calling station callback server to the called station callback server to remove the control message when the call is answered by the called party; and f) program instructions for initiating a return call message to the calling party callback server for establishing a return call between the called party and the calling party in response to the stored control message in the called station callback server.