The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 08, 2009
Filed:
Sep. 28, 2001
Ali Cherchali, Jackson, NJ (US);
James Ehlinger, Colts Neck, NJ (US);
Paul J Fellingham, Holmdel, NJ (US);
Marius Jonas Gudelis, Matawan, NJ (US);
Steven M Michelson, Freehold, NJ (US);
James Yatsko, Raritan, NJ (US);
Ali Cherchali, Jackson, NJ (US);
James Ehlinger, Colts Neck, NJ (US);
Paul J Fellingham, Holmdel, NJ (US);
Marius Jonas Gudelis, Matawan, NJ (US);
Steven M Michelson, Freehold, NJ (US);
James Yatsko, Raritan, NJ (US);
AT&T Corp., New York, NY (US);
Abstract
Voice over Internet Protocol (VoIP) calls received in a Hybrid Fiber Coax (HFC) network () maintained by a provider of HFC VoIP telephony services are advantageously translated into a Time-Division Multiplex (TDM) format by an Internet Protocol Device Terminal (IPDT) () in the HFC network. Once translated into a TDM format, the call passes to the Public Switched Telephone Network (PSTN) () for call processing to afford the call features subscribed to by the called party, such as caller-ID and call waiting. Once processed, the PSTN routes the call to the destination. Likewise, a call destined for an HFC VoIP customer can be processed within the PSTN to afford the call features subscribed to by the HFC VoIP customer. In this way, the HFC VoIP telephony service can offer full-featured VoIP cable telephony without the need to perform call processing in its own network.