Harrison Cooper <PICLIST@MITVMA.MIT.EDU> wrote:

> Kalle had an valid comment on approval to hook things to the
> phone lines.  I'm not 100% sure on this, but it seems to me
> that if you build something yourself (such as CID) for yourself and
> as long as you follow good engineering and construction practices,
> you don't have a problem tying it to the phone line (unless telco
> comes a knockin').  If you want a production item, then approval is
> necessary.  Perhaps Andrew Warren can verify this

Consider it verified.  Yes, you need FCC approval (in the States...
PTT in Europe, etc.) before you can sell any device that connects to
the phone line.  All they're really interested in is safety, so if
your device is isolated from the line via opto-isolators or
transformers, you'll get the approval.

-Andy

Andrew Warren - fastfwd@ix.netcom.com
Fast Forward Engineering, Vista, California
http://www.geocities.com/SiliconValley/2499