Optical network interface devices and methods
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United States of America Patent
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Mar 19, 2013
Grant Date -
Mar 5, 2009
app pub date -
May 15, 2008
filing date -
Aug 30, 2007
priority date (Note) -
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status (Latency Note)
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Abstract
A system comprises an optical network terminal (ONT) that provides an interface to a passive optical network (PON). The ONT is coupled to a subscriber gateway device via at least one cable. The ONT may be located outside a subscriber premises while the subscriber gateway device may be located within the subscriber premises. The ONT converts optical signals received from PON to electrical signals and transmits the electrical signals to the subscriber gateway device without performing any MAC layer functions. The subscriber gateway device includes an optical media access control (MAC) unit that converts the electrical signals into MAC layer signals and a gateway unit that distributes the MAC layer signals to one or more subscriber devices. In this manner the MAC and gateway layer functions are relocated from the ONT to the subscriber gateway device.
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