Make a phone ring

Anyone know if its possible to make a phone ring without a call coming in? Maybe get this to work via remote. This would be an awesome practical joke for my office!

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Smithmt8 years ago
I've been trying to nail this down for a while... my hangup is getting a ring voltage transformer to take 110v to 90v 30hz. (phone ringing freq.) use that with a switch or button to complete the circuit. but I can't find the transformer... help?
tm0d3r9 years ago
so the if you could remotely send 90v ac down the line, then hypothetically it would work right? sounds interesting?
Padlock tm0d3r9 years ago
I thought it was 20 Hertz AC at 70 Volts?
. Make sure you are disconnected from "Ma Bell" before doing it. And double check me - that was from a sometimes faulty memory - it may not be 90V and it may be pulsed DC.
Chicken22099 years ago
uh, you can text it to get a remote, no but most phones can preview their ring tone under the call sound settings
slide23 (author)  Chicken22099 years ago
I'm referring to a land line. How does the phone know when a call is coming?
. On a POTS system, the phone company sends ~90V AC down the line.
because there is an electronic message coming through the land line