Patent ID: 7742758

Claim:
A method of setting up a conference call, such method comprising: providing an audio mixer that receives an audio input from each of at least three audio interfaces of the conference call, mixes the audio inputs, and provides an equalized audio output to each of the at least three audio interfaces; providing a first local wireless interface between a first audio interface of the at least three audio interfaces and a first headset of the conference call; providing a second local interface between a second audio interface of the at least three audio interfaces and a second headset of the conference call; coupling a third audio interface of the at least three audio interfaces to a third headset of the conference call through a base station of a cellular network; wherein the first local wireless interface, the second local interface and the third audio interface are independent of each other and provide full duplex communications, and wherein the audio mixer comprises a summer and a divider, the summer configured to sum the audio inputs from each of the at least three audio interfaces and to provide the sum to the divider, the divider configured to divide the sum equally across the at least three audio interfaces to provide the equalized audio output.