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Posted by on January 10, 2008, 5:39 pm
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> It's possible to make a false preliminary pulse with any analog
> phone, not just candlesticks. A false preliminary pulse equates to
> dialing a 1 no matter what kind of equipment is at the other end,
> even ESS. As we've discussed on this list any number of times
> before, an experienced high school kid can dial any number by
> punching the switchhook button.
According to the Bell System history, the problem was unique to
candlestick phones. Why only those phones, I don't know. I'll have
to read up on it to get more details.
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