Multiplex communications – Special services – Conferencing
Reexamination Certificate
2011-07-26
2011-07-26
Shah, Chirag (Department: 2477)
Multiplex communications
Special services
Conferencing
C370S266000
Reexamination Certificate
active
07986644
ABSTRACT:
Embodiments according to the present invention allow multiple parties equipped with telecommunications devices (endpoint devices) of similar or differing audio capabilities to join in a conference call and enjoy the fidelity associated with their equipment. Rather than operating with the frequency and fidelity limits of traditional telecommunications circuits (for example, about 300-3500 Hz), at least a portion of a conference bridge according to the present invention operates at higher frequencies. Conference participants using high-fidelity endpoint devices hear each other with greater clarity and reproduction accuracy. Conference participants using conventional interfaces send and receive lower-fidelity audio, but it affects only their own participation and not that of the entire conference. Participants can connect via for example, wireline, wireless Public Switched Telephone Network (PSTN), or via networks such as the Internet. Multiple voice encoding schemes are accommodated.
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Ballard Spahr LLP
David P. Frankel
Reddivalam Srinivasa
Shah Chirag
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