3Com Corporation

Utstarcom, Incorporated

Christopher J Rozman

John M Sullivan

Ali Akgun

Mark O Vogel

Eric V Erickson

James A Renkel

Thomas B Gregory

A cable modem communicates the timing of the arrival of certain packets (such as TCP ACK packets) to a cable modem termination system. This timing feature is useful in methods for increasing the throughput in the downstream direction by eliminating TCP ACKs backing up at a cable modem. In particular, a cable modem termination system implementing an unsolicited bandwidth grant service in which unsolicited grants of bandwidth are sent by the cable modem termination system to the cable modem. The grants of bandwidth are timed to arrive at the cable modem simultaneous with or shortly after the arrival of the TCP ACK from an end station connected to the cable modem. Several methods of calculating or predicting when the unsolicited grants should be sent to the cable modem are described. The method is also applicable to other types of packets, such as voice packets from a end station implementing a Voice over Internet Protocol (VoIP) application.

Communication of packet arrival times to cable modem termination system and uses thereof

A system and method for communicating data between a user connected to a subscriber line and a data network comprising a first module connected to the subscriber line and a second module, physically separate from the first module, connected to the data network. The first module includes a signal converter for converting analog signals received from the subscriber line to a digital signal for sending over an interconnection path to the second module. The second module includes a modulator/demodulator for converting the digital signal to data packets. The first module may be pooled with M first modules and connected over a shared interconnection path to N second modules. The interconnection path may be concentrated to permit communication of signals from those first and second modules communicating user data at any given time.

System and method for providing high-speed data access using a distributed modem

A method and device for providing telephone subscribers serviced from digital loop carrier (&ldquo;DLC&rdquo;) systems access to a computer network. The described device includes a redirect repeater with the capability to redirect multiplexed channels of the DLC to a computer network. The redirect repeater is interfaced to the DLC and redirects channels of the multiplexed DLC system to the computer network in response to a redirect signal. The described method includes monitoring the DLC for a call origination message indicating a subscriber is originating a telephone call, buffering messages from the originating telephone call and recognizing a redirect signal indicating the telephone call is to be directed to the computer network. Messages indicating the telephone call is redirected to the computer network are inserted and the messages from the telephone call can then be redirect to the computer network.

Method and system for a redirect repeater providing network access

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Kildeer, IL, United States of America

Christopher J Rozman