Patent ID: 8483101
Filing Date: 2013-07-09
Classification: H04M

Abstract:
1. A method for forming a cascaded teleconference between digital telephony devices, comprising: selecting a plurality of digital telephony devices for a teleconference, wherein each digital telephony device includes a microphone, a speaker, and at feast one input port and output port; determining a number of ports available in each of the plurality of digital telephony devices selected for the teleconference and storing information related to the number of ports available in each of the plurality of digital telephony devices in a digital memory located in a central device; forming a cascaded peer to peer network between the selected digital telephony devices and selecting one of the plurality of digital telephony devices as the central digital telephony device configured to establish a control session with each of the plurality of digital telephony devices through a predetermined protocol; transmitting a local microphone signal from the microphone through the output port of a first telephony device in the teleconference to form an input signal on an input port of a next telephony device in the cascaded peer to peer network; summing the input signal with a local microphone signal from the microphone of the next telephony device in the cascaded peer to peer network to form a conference microphone signal transmitted through the output of the next digital telephony device; summing the local microphone signal from the microphone in each additional selected digital telephony device in the cascaded peer to peer network onto the conference microphone signal and transmitting the conference microphone signal to the next digital telephony device; forming a cascaded teleconference speaker signal for each of the selected digital telephony devices comprising each of the other local microphone signals; and broadcasting the cascaded teleconference speaker signal through the speaker of each selected digital telephony device in the cascaded peer to peer network to provide the cascaded teleconference.