Enabling Cisco legacy power to support IEEE 802.3 AF standard power
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United States of America Patent
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Jun 28, 2005
Grant Date -
Aug 12, 2004
app pub date -
Feb 6, 2003
filing date -
Feb 6, 2003
priority date (Note) -
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Abstract
An apparatus and method for enabling Cisco legacy power to support IEEE 802.3 AF standard power. A network power system capable of delivering data terminal equipment power via a media dependent interface includes power source equipment according to Cisco legacy power and at least one powered device according to IEEE standard power. A power compatibility module is inserted between the power source equipment and the powered device to enable the power source equipment to appear according to IEEE standard power and the powered device to appear according to Cisco legacy power. The module includes switches, a DC/DC converter, an IEEE power source equipment circuit, and an isolator. The module optionally includes a user signaling device for communicating operating conditions of the module to a user. The module may be connected to two ports of the power source equipment to supply adequate power levels to the powered device.
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