Thread: Phones ringing
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TVP45
TVP45 is offline
#7
Feb25-08, 08:13 AM
P: 1,130
Quote Quote by mgb_phys View Post
Real phones with a dial and a bell were rung by the line (a 48V ac signal which is surprisingly painfull for such a low voltage) modern phones detect the signal and sound a peizo buzzer, the line still sends the same signal, phone people are obsessed with backwards compatibility.
I suspect that you, like I, had the experience of installing a phone line at the moment someone called. A SHOCKING sensation!