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Slow broadband that keeps dropping out

Discussion in 'Alarms, CCTV & Telephones' started by Jupiter01, 11 Aug 2020.

  1. bernardgreen

    bernardgreen

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    Some telephone diallers will not work if the polarity of the telephone line is reversed

    speech dialer phone.jpg

    T ( Tip ) should be Positive and R ( Ring ) should be Negative ( reminder tiP Positive and riNg Negative )

    This "Ring" is not the ringing of the bell but the ring on the plug that used to be used
    upload_2020-8-24_7-56-22.jpeg
    The third contact is called the Sleeve
     
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  3. wgt52

    wgt52

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    Agreed.
     
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  4. Jupiter01

    Jupiter01

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    aha...
    Since nothing else has changed on my setup, would it be easiest to swap the R and T wires?
     
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  5. bernardgreen

    bernardgreen

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    Yes, that is well worth trying, I cannot find out whether your dialler is polarity sensitive
     
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  6. Jupiter01

    Jupiter01

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    Will report back shortly
     
  7. Jupiter01

    Jupiter01

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    Bit of an update that I wanted to share with you. I went to make this wire switch and thought it would be wise to test the dialler prior to making any changes. The test completed successfully. It managed to call my phone..

    Yet, a couple of days ago, I returned to a false alarm and hadn't received any calls. Nor had any of my designated contacts. I am inclined to create a alarm activation tomorrow and see how the dialler responds.

    Puzzled.
     
  8. bernardgreen

    bernardgreen

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    If the phone had been ringing with an incoming call then the alarm dialler would be unable to make a call.
     
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  9. Jupiter01

    Jupiter01

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    When I was testing this yesterday, I did notice a log on the speech dialler. Would that shed any light on this situation?
     
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  11. bernardgreen

    bernardgreen

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    I do not know the ins and outs of the dialler you have so cannot give answers specific to your dialler.

    Many moons ago I designed an auto dialler as part of a radio paging system. It was recommended that it was used on a dedicated line with outgoing calls only. But it did cater for incoming calls by answering them with a voice message asking the caller to hang up and not re-dial.

    If the calls an auto dialler has to make are critical then a dedicated outgoing only line is always the best option.

    At the time we found a dialler that appeared to have the functionality we needed. It was claimed that incoming calls would not prevent the dialler making calls albeit a bit later than planned. This dialler answered incoming calls ( A resistor between A wire and B wire ) but did not release the line until the caller hung up. If the caller did not hang up then the dialler could not make the ( urgent ) call.
     
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  12. secureiam

    secureiam

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    If you did a test call from the dialler, was it by firing the output or bell that is the trigger or directly from the dialler?

    wrt to the phone line, there is more than one way to wire it and i am sure it advises that one way the calls are routed via the dialler, so that if the dialler dials out it cuts off the call to give the dial out priority.

    Not used this dialler in a very long time so would have to refer to the manuals (engineers/ installation manual) i believe covers it.
     
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  13. secureiam

    secureiam

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    also from memory it isn't polarity conscious
     
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  14. bernardgreen

    bernardgreen

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    it will cut off an outgoing call and after a pause re-seize the line ( picks up the phone ) and make the alarm call.

    An incoming call will be disconnected from the phones in the house but it then relies on the caller to hang up and terminate the call. If the caller does not hang up the line will be held busy by the caller until the telephone exchange frees the line. This used to be a delay of about 20 minutes but in recent years this time out has been reduced to about a minute or less.
     
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  15. secureiam

    secureiam

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    have to admit last time I used was to change the numbers stored in it about 3 years ago and installed the last one of them about 3 to 5 years before that
     
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  16. Jupiter01

    Jupiter01

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    I previously tested the dialler using the menu option on the speech dialler keypad. I have since tested this by creating an alarm activation situation. This also activated the dialler and I received the call. Puzzled as to what may have happened that day. An incoming call preventing this seems plausible.

    Does an incoming call even when not answered prevent the dialler from calling out? I can appreciate that this will be the case of the call as been answered by a human or an answerphone.
     
  17. bernardgreen

    bernardgreen

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    Yes, unless the line is normal ( on hook ) the dialler will not ( should not ) attempt to call.

    Some diallers need to hear a dial tone before they start to dial.
     
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