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> It's common practice in England to ring a
> telephone by signaling extra voltage across one
> side of the two wire circuit and ground (earth
> in England). When the subscriber answers the
> phone, it switches to the two wire circuit for
> the conversation. This method allows two
> parties on the same line to be signaled without
> disturbing each other.
> An elderly lady with several pets called to say
> that her telephone failed to ring when her
> friends called; and that on the few occasions
> when it did ring her dog always barked first.
> The telephone repairman proceeded to the scene,
> curious to see this psychic dog.
> He climbed a nearby telephone pole, hooked in
> his test set, and dialed the subscriber's house.
> The phone didn't ring. He tried again. The dog
> barked loudly, followed by a ringing telephone.
> Climbing down from the pole, the telephone
> repairman found:
> a. A dog was tied to the telephone system's
> ground post via an iron chain and collar.
> b. The dog was receiving 90 volts of signaling
> c. After several such jolts, the dog would
> start barking and urinating on the ground.
> d. The wet ground now completed the circuit
> and the phone would ring.
> Which shows you that some problems can be fixed
> by just peeing on them.
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