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The feed system for telecommunication systems contain, in case of highways devices, the connecting terminals with a switching system.
The feed system for telecommunication systems contain, in case of highways devices, the connecting terminals with a switching system.
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机译:在高速公路设备的情况下,用于电信系统的馈电系统包含带有开关系统的连接端子。
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摘要
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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