Godigital Networks Corporation

James Hon

Andrew L Norrell

Steven R Sweitzer

Thomas L Blackburn

Jin-Nan Liaw

Kerry Schutz

Haibin Liu

An apparatus for multiplexing a digital data input into DSL outputs is disclosed. In one disclosed aspect, the apparatus may be embodied in an enclosure having a height of one rack-unit. The apparatus may include a transceiver for providing connectivity to a digital data line providing 24 DS0 channels. The apparatus may also include at least one DSL transceiver for multiplexing DS0 channels onto corresponding DSL-compatible transmission media using DSL technology. The apparatus may be mounted within a remote terminal (RT), and may receive the digital data line from within the RT.

Small form factor digital voice multiplexer with multiple DSL outputs

Method and system for implementing digital filters in the data path of a Pulse Code Modulated (PCM) modem to allow efficient transition of a second analog to digital conversion process in a communication system including monitoring the upstream data path of the communication system to decode the V.34 portion of the data transmission which occurs during the handshake phase of the modem call, where the information contained in the upstream data channel during the handshake phase allows the communication system to determine the manner in which the PCM modem is training and transmitting data to the client modem.

Method and apparatus for implementing digital filters in the data path of a PCM modem for efficient transition of a second analog-to-digital conversion process

Method and apparatus for providing an improved quality voice band channel equalization in telecommunication systems employing v.90 transmission standard in which PCM modem signals passing through a digital-to-analog and analog-to-digital conversion processes between a central office switch and a multiple subscriber access system may be reconstructed with improved quality at the A/D converter side by variably adjusting the gain between the digital-to-analog conversion process at the central office switch and the analog-to-digital conversion process at the multiple subscriber access system, and low pass filtering the signal using a second order low pass notch filter to provide a boost of 6 dB at a frequency of 4 KHz.

Efficient hardware implementation for signal reconstruction over multiple analog-to-digital, digital-to-analog conversions in a telecommunication system

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Pleasanton, CA, United States of America

James Hon