Patent ID: 7751711
Filing Date: 2010-07-06
Classification: H04J,H04Q

Abstract:
1. A residential fiber optic communication system powered by utility company electric power, said system permitting communication via customer premises equipment (CPE) including a telephone in a normal mode of operation, said system comprising: an optical line terminal (OLT) located remotely from said customer premises; an optical network terminal (ONT) located at said customer premises in communication over a fiber optic cable with said (OLT); a DC power supply located at said customer premises for supplying DC electrical power to said ONT; a rechargeable battery backup unit (BBU) located at said customer premises and rechargeable by said power supply, said BBU being operatively coupled to said ONT to supply substitute DC electrical power to said ONT if and when said utility company electric power fails; a battery output sensor and controller located at said customer premises for monitoring output level of said battery; said controller including means for automatically signaling said ONT to go into a sleep mode to conserve power when said utility company electric power fails and said output level is reduced to a first level; and said ONT including means responsive to an off hook telephone signal for over-riding operation of said automatically signaling means and thereby reverting said sleep mode back to said normal mode of operation to permit said customer to place a call from said telephone over said system.