System and method for transporting a call

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United States of America Patent

PATENT NO 6178170
SERIAL NO

08855621

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Abstract

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A system and method for transporting a call having call signaling and voiceband user communications through an asynchronous transfer mode system identifies when compression, encryption, or another processing option has been applied to the voiceband user communications. A first signaling processor processes the call signaling to identify a selected first connection and a processing option, such as a compression method, to be applied to the voiceband user communications. The first signaling processor transports a control message to a first interworking unit identifying the selected connection and the selected compression method. The first interworking unit compresses the voiceband user communications with the selected compression method, sets a convergence sublayer indicator bit as an indicator in an asynchronous transfer mode cell, fills the cell with the compressed voiceband user communications, and transports the cell over the selected connection. A second interworking unit receives the asynchronous transfer mode cell, and interworks the cell according to a decompression method for the voiceband user communications if the convergence sublayer indicator bit is set.

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Patent Owner(s)

Patent OwnerAddress
SPRINT COMMUNICATIONS COMPANY L P6450 SPRINT PARKWAY MAILSTOP KSOPHN0312-3A371 OVERLAND PARK KS 66251-2100

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Christie, Joseph Michael late of San Bruno, CA 79 1628
Christie, Joseph S Mt. Pleasant, PA 32 269
Duree, Albert Daniel Independence, MO 61 1461
Sucharczuk, Mark Mountain View, CA 7 92

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