Patent ID: 6560707
Filing Date: 2003-05-06
Classification: H04L,H04M

Abstract:
In a network interconnecting a central server and a plurality of client workstations adapted to sending and receiving out-of-band data, out-of-band data being multicast between some of the client workstations without going through the central server or any intermediary device controlled by the central server, a method for coordinating communication of out-of-band data between some of the client workstations, comprising the steps of:associating a first client workstation with a device, the device providing multimedia input at the first client workstation; defining a first transmitter object in a memory of the central server, the first transmitter object being associated with a first transmitter for transmitting data from the device over a first channel; defining a first receiver object in the memory of the central server, the first receiver object being associated with a first receiver for receiving audio signals over the first channel at a second client workstation; providing a first encryption key to the first client workstation and the second client workstation to provide secure communication of data over the first channel; defining, subsequent to said providing step, a second receiver object in the memory of the server, the second receiver object being associated with a second receiver for receiving audio signals over the first channel at a third client workstation; and replacing, in response to said defining step, the first encryption key with a second encryption key, the second encryption key being provided to the first client workstation, the second client workstation, and the third client workstation for communication of data over the first channel so that communication broadcast over the first channel is secure.