Patent ID: 7564834
Filing Date: 2009-07-21
Classification: H04M

Abstract:
1. A telephone system comprising: a first telephone connected to a first server in a first local area network (“LAN”); a second telephone connected to a second server in a second LAN; a wide area network (“WAN”) coupling the first LAN to the second LAN; the first server having circuitry for sending a status change message to the second server via the WAN, the status change message containing information that the first telephone has changed from a first state to a second state, wherein the status change message is not associated with an establishment or termination of a voice communication channel between the first and second telephones; the second server having circuitry for sending a signal to the second telephone in response to receipt of the status change message; and the second telephone having circuitry for modifying a status indicator in response to receipt of the signal from the second server, the status indicator operable for providing a sensory indication of the change of the first state to the second state in the first telephone.