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The OpenTAP gateway access number 09018600011 is not working, why?

There are a few possible reasons why they 09018600011 OpenTAP access number is not working.

  1. Some phone companies block 09 premium numbers, so you will need to call your phone line company and ask them to remove the barring for 09018600011.
  2. Your alarm system modem is not set to the default parity setting which should be set to 7-e-1.
  3. Your alarm system modem is faulty.
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