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[escepticos] RV: Amusing supposed to be true psychic story

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-----Original Message-----
De: Steven Shaw <Banachek en compuserve.com>
Asunto: Amusing supposed to be true psychic story

Phone Problems (AKA The Psychic Dog)

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

When the subscriber answers the phone, it switches to the two wire circuits
for the conversation. This method allows two parties on the same line to be
signaled without disturbing each other. 

Anyway, 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 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 repair man 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 current. 

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.