On Line Warning Phone Circuit

Discussion in 'Electronic Basics' started by steve, Apr 15, 2006.

  1. steve

    steve Guest

    I have a multiple line phone system. I use a head set. People start
    talking to me when I'm on the phone, when because they don't know if IM
    on the phone or not. Can someone point me to a simple circuit that I
    can make that would plug into the wall RJ connector and then plug my
    phone into to detect when I'm on the phone and light an LED to indicate
    I'm on the phone.

    I have build a few phone circuits before. But this phone is not a
    regular house phone, but rather a multi line "Office" phone where I'm
    assuming its digital or something.

    regards
     
    steve, Apr 15, 2006
    #1
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  2. steve

    Chris Guest

    steve wrote:
    > I have a multiple line phone system. I use a head set. People start
    > talking to me when I'm on the phone, when because they don't know if IM
    > on the phone or not. Can someone point me to a simple circuit that I
    > can make that would plug into the wall RJ connector and then plug my
    > phone into to detect when I'm on the phone and light an LED to indicate
    > I'm on the phone.
    >
    > I have build a few phone circuits before. But this phone is not a
    > regular house phone, but rather a multi line "Office" phone where I'm
    > assuming its digital or something.
    >
    > regards


    Hi, Steve. You should start out by reading the phone system manuals,
    and also by getting in touch with the sales rep for the system. If
    you've got a multi-line system,

    1) Home brew mods will void any warranty or service contract your
    company has on the system, and

    2) I'll bet the device you want is available as an accessory, or as a
    different phone.

    Good luck
    Chris
     
    Chris, Apr 15, 2006
    #2
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  3. steve

    steve Guest

    Chris wrote:
    > steve wrote:
    > > I have a multiple line phone system. I use a head set. People start
    > > talking to me when I'm on the phone, when because they don't know if IM
    > > on the phone or not. Can someone point me to a simple circuit that I
    > > can make that would plug into the wall RJ connector and then plug my
    > > phone into to detect when I'm on the phone and light an LED to indicate
    > > I'm on the phone.
    > >
    > > I have build a few phone circuits before. But this phone is not a
    > > regular house phone, but rather a multi line "Office" phone where I'm
    > > assuming its digital or something.
    > >
    > > regards

    >
    > Hi, Steve. You should start out by reading the phone system manuals,
    > and also by getting in touch with the sales rep for the system. If
    > you've got a multi-line system,
    >
    > 1) Home brew mods will void any warranty or service contract your
    > company has on the system, and
    >
    > 2) I'll bet the device you want is available as an accessory, or as a
    > different phone.
    >
    > Good luck
    > Chris


    Well the service contract is long gone. Unfortunately the manual
    doesn't say much about this. Yes I suppose there is something you
    could buy. But Being a bit of a hobbyist I was looking forward to
    building something. Unfortunately, I suppose there are no general
    diagrams for this kind of thing.

    Regards
     
    steve, Apr 16, 2006
    #3
  4. steve

    Terry Guest

    On 15 Apr 2006 05:10:04 -0700, "steve" <> wrote:

    =>I have a multiple line phone system....

    snipped

    Steve--take a look at http://www.discovercircuits.com/T/telephone.htm
    where I'm sure you'll find something of interest!

    Cheers--
    Terry--WB4FXD
    Edenton, NC
     
    Terry, Apr 19, 2006
    #4
  5. steve

    steve Guest

    Thanks Terry for your help.

    I'm not advanced enough to know however which one would work on a
    digital line. I don't believe business phones use the same high
    voltages that a normal house phone uses? Interesting enough in my
    research I have found many people asking this same question and wanting
    a solution but no one with a solution. Can anyone point to ones that
    might work. Again I'm looking for something simple. Some of them look
    awfully complex. All I want is a light or something saying that someone
    is on the phone. right now our phones just have an liquid crystal
    little screen that just point to the line in use. This is impossible to
    see over someones shoulder or sitting accross the room.

    Alternatively I was thinking of putting some sort of Induction device
    on the hand piece that would detect a small current and then light a
    light. However I have not seen any schematics for this.

    Regards
     
    steve, Apr 20, 2006
    #5
  6. steve wrote:
    >
    > Thanks Terry for your help.
    >
    > I'm not advanced enough to know however which one would work on a
    > digital line. I don't believe business phones use the same high
    > voltages that a normal house phone uses? Interesting enough in my
    > research I have found many people asking this same question and wanting
    > a solution but no one with a solution. Can anyone point to ones that
    > might work. Again I'm looking for something simple. Some of them look
    > awfully complex. All I want is a light or something saying that someone
    > is on the phone. right now our phones just have an liquid crystal
    > little screen that just point to the line in use. This is impossible to
    > see over someones shoulder or sitting accross the room.
    >
    > Alternatively I was thinking of putting some sort of Induction device
    > on the hand piece that would detect a small current and then light a
    > light. However I have not seen any schematics for this.
    >
    > Regards


    The newer business phones that I've worked with use two pairs, one for
    voice, and the other for data. Does the phone have a station lamp on it
    to show wich phones are in use? If it does, mount a phototransistor or
    other photo detector over it and use it to switch your "Can't you see
    that I'm busy, you idiot? Go away!" sign. ;-)
    --
    Service to my country? Been there, Done that, and I've got my DD214 to
    prove it.
    Member of DAV #85.

    Michael A. Terrell
    Central Florida
     
    Michael A. Terrell, Apr 20, 2006
    #6
  7. steve

    steve Guest

    Michael,

    That is a great Idea, And I actually did think of it. Unfortunetely it
    doesn have an idiot light. It just has an lcd strip and it just points
    to the line that is being used. Its prety dim.

    Any other thoughts ? Anyone.

    Regards
     
    steve, Apr 22, 2006
    #7
  8. steve wrote:
    >
    > Michael,
    >
    > That is a great Idea, And I actually did think of it. Unfortunetely it
    > doesn have an idiot light. It just has an lcd strip and it just points
    > to the line that is being used. Its prety dim.
    >
    > Any other thoughts ? Anyone.
    >
    > Regards



    Do you have the programming manual for the phone system? Some have
    interesting options that can be added to the system and programmed for
    interesting functions.


    --
    Service to my country? Been there, Done that, and I've got my DD214 to
    prove it.
    Member of DAV #85.

    Michael A. Terrell
    Central Florida
     
    Michael A. Terrell, Apr 22, 2006
    #8
  9. steve

    steve Guest

    Yes I know what you mean. Often they can do more than anyone can
    imagine, or ever get used. But alas there is nothing there to really
    help in my situation.

    Thanks.
     
    steve, Apr 22, 2006
    #9
  10. steve wrote:
    >
    > Yes I know what you mean. Often they can do more than anyone can
    > imagine, or ever get used. But alas there is nothing there to really
    > help in my situation.
    >
    > Thanks.



    Sounds like it s time for a new phone system. :( Where is an old 1A2
    system when you need it?


    --
    Service to my country? Been there, Done that, and I've got my DD214 to
    prove it.
    Member of DAV #85.

    Michael A. Terrell
    Central Florida
     
    Michael A. Terrell, Apr 22, 2006
    #10
  11. steve

    Rich Grise Guest

    On Thu, 20 Apr 2006 03:59:58 -0700, steve wrote:

    > Thanks Terry for your help.
    >
    > I'm not advanced enough to know however which one would work on a
    > digital line. I don't believe business phones use the same high
    > voltages that a normal house phone uses? Interesting enough in my
    > research I have found many people asking this same question and wanting
    > a solution but no one with a solution. Can anyone point to ones that
    > might work. Again I'm looking for something simple. Some of them look
    > awfully complex. All I want is a light or something saying that someone
    > is on the phone. right now our phones just have an liquid crystal
    > little screen that just point to the line in use. This is impossible to
    > see over someones shoulder or sitting accross the room.
    >
    > Alternatively I was thinking of putting some sort of Induction device
    > on the hand piece that would detect a small current and then light a
    > light. However I have not seen any schematics for this.
    >
    > Regards


    Are you trying to go behind the PHB's back on this, or what? Ask the
    people who sold you the phone system if they have some kind of "on-line"
    indicator - there isn't anything you can do at a hobbyist level, and
    you'd void the warranty anyway. All of those office phone systems have
    some kind of central computer, and the phones aren't real phones, so
    without knowing that particular make and model's coding scheme, it's
    impossible to figure out how to make anything to interface with it.

    Good Luck!
    Rich
     
    Rich Grise, Apr 22, 2006
    #11
  12. steve

    Rich Grise Guest

    On Thu, 20 Apr 2006 21:42:55 +0000, Michael A. Terrell wrote:

    > steve wrote:

    ....
    >> is on the phone. right now our phones just have an liquid crystal

    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    >> little screen that just point to the line in use. This is impossible to

    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

    > The newer business phones that I've worked with use two pairs, one for
    > voice, and the other for data. Does the phone have a station lamp on it
    > to show wich phones are in use? ...


    Apparently not.

    Cheers!
    Rich
     
    Rich Grise, Apr 22, 2006
    #12
  13. steve

    Mike Guest

    steve wrote:
    > I have a multiple line phone system. I use a head set. People start
    > talking to me when I'm on the phone, when because they don't know if IM
    > on the phone or not. Can someone point me to a simple circuit that I
    > can make that would plug into the wall RJ connector and then plug my
    > phone into to detect when I'm on the phone and light an LED to indicate
    > I'm on the phone.
    >
    > I have build a few phone circuits before. But this phone is not a
    > regular house phone, but rather a multi line "Office" phone where I'm
    > assuming its digital or something.
    >
    > regards
    >


    I posted a question about a "phone busy" circuit a couple of days ago
    (titled: "does this circuit use conventional current?") that may suit
    your needs. The LED flashes when the phone is in use. Pick up a copy of
    the March 2006 issue of Nuts & Volts if you want to know how it works.
    There's a short column on it.

    --
    Mike
     
    Mike, Apr 22, 2006
    #13
  14. Mike wrote:
    >
    > steve wrote:
    > > I have a multiple line phone system. I use a head set. People start
    > > talking to me when I'm on the phone, when because they don't know if IM
    > > on the phone or not. Can someone point me to a simple circuit that I
    > > can make that would plug into the wall RJ connector and then plug my
    > > phone into to detect when I'm on the phone and light an LED to indicate
    > > I'm on the phone.
    > >
    > > I have build a few phone circuits before. But this phone is not a
    > > regular house phone, but rather a multi line "Office" phone where I'm
    > > assuming its digital or something.
    > >
    > > regards
    > >

    >
    > I posted a question about a "phone busy" circuit a couple of days ago
    > (titled: "does this circuit use conventional current?") that may suit
    > your needs. The LED flashes when the phone is in use. Pick up a copy of
    > the March 2006 issue of Nuts & Volts if you want to know how it works.
    > There's a short column on it.
    >
    > --
    > Mike



    He is using a business phone system. The gadgets that work on single
    line phones generally do not work with newer business phones.


    --
    Service to my country? Been there, Done that, and I've got my DD214 to
    prove it.
    Member of DAV #85.

    Michael A. Terrell
    Central Florida
     
    Michael A. Terrell, Apr 22, 2006
    #14
  15. steve

    steve Guest

    Mike,

    Interestingly enough I had already read your queries and answers. Had
    your diagram up on my screen.

    However it is true that our phone system is a business phone system. As
    one person I think appropriately said, business phone systems aren't
    really phone systems. That is, they are proprietary hardware and
    sometimes software build by any number of companies. It seems in my
    research that this is a particularly hard nut to crack generically, in
    other words one solution will not fit all. I do have an answer however
    that Im trying to pursue. I alluded to it earlier in my response to one
    poster. I think an induction type device would work. The idea came to
    me when I saw various circuits for Inductive phone taps.
    ( http://www.unterzuber.com/tap.html )
    Of course I have no interest in taping anyones phone, and the way I
    would build this thing it would be pretty obvious on anyones phone. But
    I thought if I could simply put on the hand set wire an induction
    device to pick up voltage when the phone is on line. Possibly increase
    the voltage using transistors to a flashing led it would simply pick up
    the voltage, light a flashing led and voila there you have it. Its
    passive, and actually should work on any type of phone system.
    Alternatively you could do this and use a 9 volt battery to flash the
    light.

    I'm a novice so anyone who would like to diagram such a things feel
    free to post some ascii art circuits.

    Regards
     
    steve, Apr 23, 2006
    #15
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