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Joined: Jul 2001
Posts: 3,346 Likes: 10
Moderator-Avaya-Lucent, Antique Tele
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Moderator-Avaya-Lucent, Antique Tele
Joined: Jul 2001
Posts: 3,346 Likes: 10 |
If I called you on your cell phone, and you pressed #9 while we were talking, I would hear the touch tones.
So if I were the gate phone calling you, and heard the touch tones #9 coming from you, I would press the clicker that opens the gate.
Electronically, the gate phone has a circuit built into it that is listening for those specific touch tones. When it gets the right ones, in the right sequence, it triggers the relay that cycles the gate.
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