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phone cap. — Parallax Forums

phone cap.

coorscoors Posts: 28
edited 2004-12-08 18:36 in BASIC Stamp
Hi,
I'm working on an alarm system using a basic stamp 2 homework board.· I would like to add a phone or internet capability that would contact the owner whenever the alarm is tripped.· Please direct me to the best course of action.
Thank you
Ed

Comments

  • K de JongK de Jong Posts: 154
    edited 2004-12-06 23:28
    Hi Coors,

    I believe Parallax sells a modem Appmod for the BS2's, so have a look at the website.

    You could of course try to use an old Hayes Compatible modem and serout 'AT'-commands to it, but that will be the more experimenting road.

    Regards,

    Klaus
  • Chris SavageChris Savage Parallax Engineering Posts: 14,406
    edited 2004-12-07 02:01
    Ed,

    ·· We're currently working on such a project at my business...Although I don't have much done in the phone section, as I am uncertain as to how I want to handle contact.

    http://www.lightlink.com/dream/chris/stamps_alarm2_desc.htm

    I don't know whether to try and send a page, message my Cel-Phone, voice message my Cel-Phone, or what.· What were your plans?



    ▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
    Chris Savage

    Knight Designs
    324 West Main Street
    P.O. Box 97
    Montour Falls, NY 14865
    (607) 535-6777

    Business Page:·· http://www.knightdesigns.com
    Personal Page:··· http://www.lightlink.com/dream/chris
    Designs Page:··· http://www.lightlink.com/dream/designs
    ·
  • allanlane5allanlane5 Posts: 3,815
    edited 2004-12-07 14:58
    It turns out it can be quite difficult to connect to phone lines legally. There are a couple of special parts you need, which must be designed in and installed properly.

    The Modem App-Mod has done all the hard work for you. I know it may seem pricey at around $100, but I believe it is the simplist way to embed this kind of functionality.

    Be aware, though, that it does very little for you that any HAYES compatible modem does, if you have the space for the modem.

    Of course, it is trivial to connect to the phone lines with whatever device you want to hang off there. It's the legality and long-term function I was talking about.

    It is also very easy in software to use a modem to page a pager, or send a response number, automatically. Voice is much harder.
  • coorscoors Posts: 28
    edited 2004-12-08 17:57
    The appMod sounds good. But it is a little expensive.

    What is this HAyes thing, is it very compicated to implement?

    I want to implement a·phone capability that will do the deed.·

    Would it be easier to implement internet capability, or should I stick to phone capability.

    I want to implement the best way to have my alarm system communicate with a customer.
  • allanlane5allanlane5 Posts: 3,815
    edited 2004-12-08 18:36
    The 'Hayes thing', as you call it, is merely a stand-alone, off the shelf Modem.

    The Hayes company implemented a very nice control protocol for Modems. They made it globally available. All PC modems now tend to be Hayes command set compatible.

    So any stand-alone Modem should work. Note I say 'Stand-alone', as different from one that plugs in to your PCI bus, ISA bus, or whatever. And off-the-shelf Modem's tend to be cheaper than the app-mod.
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