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Communications Failure

Discussion in 'Security Alarms' started by Key Stroke, Nov 5, 2004.

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  1. Key Stroke

    Key Stroke Guest

    On my Ademco system, I simply switched telephone lines, and now the
    panel displays "Comm. Failure". I am using an RJ31X... the line runs
    into it, and into my alarm unit (I have checked to verify polarities
    are correct). It then runs from the unit to the rest of the phone
    system. Any ideas on what could be wrong, or some tests I can do to
    gain more info? I have connected a phone (lineman's handset) via gator
    clips to the pairs in the alarm, and I receive a dial-tone. I am new
    to alarms so this has stumped me. Any help is appreciated. Thanks! :)
  2. petem

    petem Guest

    on a rj31x there is a in and a out...

    most of the time poeple invers them

    FIRST call the monitoring center before playing with the alarm panel, there
    is allready some signal to be sent in the panel buffer and it will send it
    as soon as you connect it properly....
    to make a simple test , ask someone to creat an alarm on the system while
    you listen on the line with your lineman's handset at one of the side of
    your rj31x..(try the red/green pair first)

    the proper working should be :
    before the dialing atempt
    there will be a dial tone at the red/green pair and at the exit
    pair..(brown/grey on the model i use)

    while the panel try to call
    you will hear a communication tentative on the red/green pair and nothing on
    the exit pair..

    if you dont have the dialing atempt on red/green pair and still dial tone on
    the exit pair,and no dial tone at the home phone
    you plugged it revers..

    connect the pair that was going at the red/green at the exit pair and vice
    test it and write back the result...
  3. G. Morgan

    G. Morgan Guest

    On 06 Nov 2004 03:21:12 GMT "Group Moderator"
    used 12 lines of text to write in newsgroup:

    Unless he has an ADT rj-?? whatever *they* call it. It's backwards.
  4. Bossman

    Bossman Guest

    I'm not sure the sequence of events, but you could have had a comm
    failure when you disconnected the first phone line. If the panel is
    programmed for it, it detected the phone line disconnect and tried to
    call, which of course it couldn't because you hadn't connected it to
    the second phone line yet.

    Put the system on test the with CS, and try to send signals again. If
    they go through, the comm failure will disappear.

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