Re: telephone in the shop?

["Tim Mullen" <Tim.Mullen@trw.com>]

> For historical purposes, <...>
>
> <...> In the early days of touchtone, 
> the touchtone phones were sensitive to polarity, and would not work
> it tip/ring were swapped. 

For those that can remember, in the even earlier days, some rotary dial 
phones would make "ringing sounds" as you dialed a number.  This 
could usually be cured by swapping the tip/ring...

Tim Mullen - Aunt Bessie still has a rotary dial phone on her farm in 
Indianna...