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Building a phone ringer control for theatrical use
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Tuner
Feb 2, 2007, 7:10:31 PM2/2/07
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I'm attempting to construct a control box into which 6 separate phones will
be connected with normal RJ11 jacks. I'd like to control each phone's
ringer separately - no voice line, just make the phone ring.
be connected with normal RJ11 jacks. I'd like to control each phone's
ringer separately - no voice line, just make the phone ring.
These will all be standard desk telephones, US issue. I understand that I
need approximately 90 volts AC to drive the ringers, but I can't seem to
find out the required amperage so I can purchase the appropriate
transformer. Is anyone familiar with the particulars?
Yes, I've heard of the Tele-Q device, but we're working on no budget and
want to control 6 phones, not just one.
TIA!!
Tuner
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