Post by thread:[piclist] Telephone monitor

Yes, but it would not be legal. By the way, the circuit I posted was NOT a phone line monitor, it was just an example of analyzing circuits with op amps. The old 68.312(b)(1) required the on hook DC resistance to be at least 5M. It'd have to be a pretty low current LED! Note that the FCC has removed the interconnection standards from part 68 of the rules, turning them over to a private standards group. However, I expect the on hook DC resistance requirement remains about the same. You can see the old FCC rule at http://www.hallikainen.org/cgi-bin/addlink.pl?http://frwebgate.access.gpo .gov/cgi-bin/get-cfr.cgi?TITLE=47&PART=68&SECTION=312&TYPE=TEXT&YEAR=2000 with links to other rules, or frwebgate.access.gpo.gov/cgi-bin/get-cfr.cgi?TITLE=47&PART=68&SECT ION=312&TYPE=TEXT&YEAR=2000 without links. In both cases, watch for URL wrap! Harold On Thu, 1 Aug 2002 13:12:04 -0400 "hog" <spam_OUTlmoffittTakeThisOuTbellsouth.net> writes: > Harold, wouldnt a resistor , twelve volt zener and led be > cheaper-----when led lit fone is hung up??????? Lloyd FCC Rules Online at http://hallikainen.com/FccRules Lighting control for theatre and television at http://www.dovesystems.com Reach broadcasters, engineers, manufacturers, compliance labs, and attorneys. Advertise at http://www.hallikainen.com/FccRules/ . ________________________________________________________________ GET INTERNET ACCESS FROM JUNO! Juno offers FREE or PREMIUM Internet access for less! Join Juno today! For your FREE software, visit: dl.http://www.juno.com/get/web/. -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics