Jon, 

 I bought a SAMS book from Radio Shack (Tandy - to 
those oversees) about a dozen years ago that explained 
simple telephones, and a little more.  "Tip & Ring" 
comes from the old plugs the operators had to use to 
manually connect calls, the was a Tip, an insulator/ 
gap, and a Ring, followed by another insulator.  At 
least that's the explaination I was given when I started 
in this business 15 years ago.  TREG would be a better 
forum for this question.  I hope this helps.  

 Best regards, 
 Stephen C. Phillips 
 All opinions are my own.  

At 11:34 AM 7/22/97 MST, you wrote:
>     
>     I'm not quite on the correct list for this but -
>     
>     Do any of you know of a good book that details how the phone systems 
>     work (what's a ring, what a tip, etc).
>     
>     Also a book that covers what regulations are involved to gizmos that 
>     connect to the phone lines in a home.
>     
>     Basically, if I could learn how to design a telephone I'd know what I 
>     need for an upcomming project.
>     
>     Thanks,
>     
>     Jon Bertrand
>     [email protected]


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