Dog Makes Phone Ring

This really is most comical, enjoy…

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.

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 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 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.