Intel S815EBM1 Product Guide - Page 17
Wake on Ring, Resume on Ring, exceeds power supply capacity
UPC - 735858149839
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CAUTION If the standby current necessary to support multiple wake events from the PCI and/or USB buses exceeds power supply capacity, the server board may lose register settings stored in memory, etc. Wake on Ring The operation of Wake on Ring can be summarized as follows: • Powers up the server from the APM soft-off mode. • Modem must support PME. • Requires two calls to access the server: The first call powers up the server. The second call enables access (when the appropriate software is loaded). • For external modems, hardware on the server board monitors the ring indicate (RI) input of the serial port. Resume on Ring The operation of Resume on Ring can be summarized as follows: • Resumes operation from the APM sleep mode. • Requires only one call to access the server. • Detects incoming call similarly for external and internal modems; does not use the Wake on Ring connector. • Requires modem interrupt be unmasked for correct operation. Description 17