H - Electricity – 04 – M
Patent
H - Electricity
04
M
H04M 19/04 (2006.01) G06F 1/18 (2006.01) G06F 1/26 (2006.01) H04L 12/10 (2006.01) H04M 19/00 (2006.01) H04M 19/02 (2006.01)
Patent
CA 2253105
A system within a PC server cabinet for receiving an externally supplied loop feed voltage (-48 VDC) and generating a ringing voltage (75 VAC) from the loop feed voltage. For universal applicability, the ringing voltage generator is preferably located in a 5.25 inch standard disk-drive housing of the cabinet, allowing it to fit into any PC. All required telecommunications signaling and power is thereby provided in the PC while limiting accidental user exposure to hazardous ringing signal voltage levels.
Mitel Corporation
Mitel Networks Corporation
Perry + Currier
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