Phone Circuit.
a 3-way switch turns phone service on/off from 2 locations
an LED indicates when the phone is on/off at the 2 locations
a switch toggles phone service between the land line (local) and internet phone (long distance)
N.C. contacts permit use of the phone when power outages disable the relay coil.
Here's a phone circuit I made to curb the relentless assault of creditors. We can turn the phone line completely off from 2 locations, the living room and bedroom. We can also switch between internet phone (long distance) and land line (local). Then we don't have to use up internet phone minutes for local calls.
This has been working well for the past 4 years and the LED's haven't burned out yet.
3/10 obvious troll is obvious
you can't complain now. All of the pages with adult content are annotated.
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