В природе существует модем SIG60: "The SIG60 is a second generation transceiver for digital communication over battery powerline. It allows the powerline to be employed for both power and communication, thus eliminating the need for special wires for carrying control and data. The SIG60 uses a unique multiplex digital signaling technology that overcomes the powerline noisy environment. A small footprint integrates most of the external components needed for its operation. A sleep mode puts the device in a power saving mode while it is still capable of sensing the bus for remote wakeup messages from other devices. "
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