| 摘要 |
In a Power over Ethernet (POE) system, a power source equipment (PSE) device configured to deliver power to one or more powered devices (PDs) over a plurality of Ethernet transmission lines. The PSE interface includes a multi-port transmission line connector capable of connecting to multiple Ethernet transmission lines, and a power source equipment (PSE) controller module integrated with the multi-port transmission line connector. The PSE controller module is capable of high power operation beyond that specified by IEEE standard 802.3af(TM) for powered devices. More specifically, the PSE controller is configured to deliver over 15.4 Watts, and up to 36 Watts of power, to meet the needs of high powered devices such as IP Phones, and access points. Further, the PSE controllers can utilize, currently unused, class 4 of IEEE standard 802.3af(TM) to identify, initiate, and classify the high power operation mode. Or it could use multiple event physical layer classification and Data Link Layer Classification for this high power PD detection as described in the latest draft from 'at' task force from IEEE.
|
