Hello & Welcome to Just Answer,
Sorry to hear of any trouble you may be having.
If you are referring to the "remote access code" for this phone system, the default code to enter when you dial in is 19 (one-nine).
If you don't have the manual handy for this system, I have a link to the electronic (PDF) version for you below. The default remote code is mentioned on page 31.
I hope this helps. Please let me know if you have any issues seeing that manual, or any other questions.
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Thanks, ***** *****
I see it has been a few days and I just wanted to follow up to see if you have any more questions concerning this issue or if the issue was resolved.
I look forward to any further questions or results that you may have.