Multiplex communications – Communication techniques for information carried in plural... – Combining or distributing information via frequency channels
Reexamination Certificate
2006-04-24
2008-11-11
Qureshi, Afsar M. (Department: 2616)
Multiplex communications
Communication techniques for information carried in plural...
Combining or distributing information via frequency channels
C370S353000, C370S360000, C370S442000, C370S466000, C370S476000
Reexamination Certificate
active
07450614
ABSTRACT:
Presently described is a system and method for switching multimedia data communications, including but not limited to Voice over IP (VoIP) telephony, cable TV, digital audio and video. The system utilizes a single, integrated device to provide all Packet Cable-compliant functionality, including enhanced user privacy, compliance with CALEA, E911 and other mandated services not available in conventional distributed Packet Cable systems. High speed and efficient, low cost operation are provided by means of an optimized data unit encapsulation scheme for internal switching and routing. A proprietary fiber optic backplane and removable optical connectors are used to enable light speed internal communications hot-swapping of components. Furthermore, the present system is extensible to all forms of digital data switching and is secure, resistant to Denial of Service attacks, and fault-resilient.
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Devine Geoffrey
Doucette John
English Daniel W.
Fitzgerald Jeffrey J.
Miller Paul
Cedar Point Communications
Qureshi Afsar M.
Ropes & Gray LLP
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