IP Door sensor

Discussion in '3CX Phone System - General' started by renardi, Nov 15, 2011.

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  1. renardi

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    Hello,

    I was wondering if there were door sensors, who could connect to 3CX and dial phone when a door is opened?

    I would like to use this in a store, to know when someone has entered.

    Regards,

    Christophe.
    Belgium
     
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  2. flurk

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    Hi,

    if this can help you: in the past week i built a SIP-doorbel, using an old handsfree analog pots telephone, connected to a grandstream ATA HT508 (or GXW400x).
    The essential concepts are: the hookswitch of the telephone becomes the doorbell; in the ATA-box the field "offhook auto dial" should be configured.
    My setup works fine; i can even transfer the doorbell to an IVR or a voice-mail recorder.

    For your system, you could do exactly the same: the hookswitch of the telephone becomes the door sensor. when the door opens, automatically a specific tel. number is dialed.

    If you want to know more, contact me and I'll send you the detailed recipe of my contraption.
    I'm even thinking of building a SIP dooropener. In this case the telephone bell will trigger an optocoupler, which in turn will trigger an electromagnet, which controls the door.

    Greets,
    Flurk,
    Brussel
     
  3. renardi

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    Thanks Furk.

    Is there another way to simulate a hookswitch on a ATA device, lets say by pressing a button?
     
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  4. flurk

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    Hi,

    first, I never gave it a thought to connect a switch directly to an ATA device, but that must be possible. A simple switch with a series resistor might work. You might have to think about how to interrupt your "call" after a given time. I think you will have to build an electronic circuit there with a simple timer.
    I used a complete telephone for my setup, because i needed also the handsfree functionality.
    For the dooropener, i will also use a complete telephone, that i modify and of which i will use in the end only the ringer-parts.

    Secondly, as a "switch" you might use anything: pushbutton, microswitch, reedswitch...

    regards,
    flurk
     
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