Power system for telephony systems

Details Power system for telephony systems Power system for telephony systems

H - Electricity

04

M

H04M 19/00 (2006.01) H04M 19/08 (2006.01)

Patent

CA 2045703

ABSTRACT POWER SYSTEM FOR TELEPHONY SYSTEMS The invention concerns a telephony system in which a plurality of local network terminations (8) are connected to a street cabinet (3) in turn connected to an exchange (1), the street cabinet (2) having a power supply (21) for supplying power and a master ringing signal to each of the local network terminations. The power supply comprises a rectifier (21) for rectifying A.C. mains (7) and one output of the rectifier (21) is connected to a battery (22) to provide back up in the event of power failure.

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