Multiplex communications – Pathfinding or routing – Switching a message which includes an address header
Reexamination Certificate
2005-04-12
2005-04-12
Pezzlo, John (Department: 2662)
Multiplex communications
Pathfinding or routing
Switching a message which includes an address header
C370S395600, C370S434000, C370S493000
Reexamination Certificate
active
06879591
ABSTRACT:
An asymmetrical digital subscriber line (ADSL) system for transferring an analog audio signal and high speed digital data on the side of a subscriber, from and to a station, through one ADSL subscriber line, includes an apparatus on the subscriber side which converts an analog audio signal into a digital audio signal. The apparatus includes a line concentrator to concentrate the audio signal together with high-speed digital data by time division, and supplied to the subscriber line after modulation. An apparatus on the station side simultaneously supplies a signal received from the subscriber side to an analog telephone network, and supplies high-speed digital data to a high-speed digital data network. Each digital audio signal as well as each high-speed digital data is converted into asynchronous transfer mode (ATM) cells in each respective line concentrator, and each destination address is attached to the ATM cells.
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The International Engineering Consortium, www.iec.org, Asymmetric Digital Subscriber Line (ADSL).*
The International Engineering Consortium, www.iec.org, Voice-over-Digital Subscriber Line (VoDSL) Service-New Revenue from Existing Infrastructure.*
Japanese Office Action dated May 22, 2001, with partial English translation.
McGinn & Gibb PLLC
NEC Corporation
Pezzlo John
Tsegaye Saba
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