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The OpenTAP gateway access number 09117329997 is not working, why?

There are a few possible reasons why they 09117329997 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 09117329997.
  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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