🚀 go-pugleaf

In article <1992Aug27.160630.615@fwi.uva.nl> aroest@fwi.uva.nl (Axello de Roestello) writes:
>rubin@cis.ohio-state.edu (Daniel Rubin) writes:
>
>>Hi all... I want to connect my Mac to my phone.  I am going to connect the
>>speaker of the Mac to the mic of the phone and the speaker from the phone to
>>the Mac's mic...
>
>>I know that the levels do not match.    ...
>
>Don't do it!!!
>Not only do the levels not match, the phone line can have 60 volts across its 
>wires and will fry your Mac when it is ringing. 

  To me it looks like Daniel wants to connect his Mac speaker to the
*phone handset* mike input, not directly to the line. In this case
the phone probably provides all the isolation he needs, as well as the
FCC-approved interface and hook switch and all thet cruft. 
  The problem in this case is that the solution probably depends on
the phone you're patching into and what kind of mike it uses.
I don't know enough about current brands of phones to say if there's
one overwhelmingly common circuit design (somehow I doubt carbon 
mikes are still in style) or if there's a way to connect to the phone
circuit after the first stage of amplification, or whatever...


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