Internet telephone service using cellular digital vocoder

Patent 6570871 Issued on May 27, 2003. Estimated Expiration Date:

October 8, 2016. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

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Inventor

Schneider, Allan

Assignee

Verizon Services Corp.

Application

No. 727730 filed on 10/08/1996

US Classes:

370/356, Routing circuit switched traffic through a packet switching network370/401Bridge or gateway between networks

Examiners

Primary: Nguyen, Steven
Assistant: Nguyen, Phu K.

Attorney, Agent or Firm

International Classes

H04L 012/66
H04L 012/56

Abstract

A system and method for providing telephone type services over the internetwork commonly known as the Internet. Wireless digital telephones in communication with wireless digital communications systems have speech coders that generate digital voice samples, and encoders that encode the digital voice samples to minimize bit errors during RF transmission. The wireless digital communications system demodulates the received modulated wireless signal transmitted by the digital telephone to recover the encoded, digital voice samples. The error correction codes within the encoded, digital voice samples are removed to recover the original digital voice samples generated by the vocoder in the digital telephone. The decoded digital voice samples are then supplied to a gateway interface that packetizes the decoded digital voice samples into digital voice sample segments, assigns a packet address corresponding to the destination telephone number, and outputs the digital voice sample segments as data packets onto a packet switched network, such as the Internet, for reception by a network node corresponding to the destination address.

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