Rule's of the Forum:
"2.
Please do not post passwords or any other privileged information in the public forums. As a rule of thumb, if the information is not in the users or administrators guide, do not post it in the forum. If you wish to relate such information in regard to a post, you should do this by sending a private message or an email to the poster."
Have you tried the default password? This can be found with a simple internet search, for example:
https://www.pbxmechanic.com/default-passwords-pbx.htmlTry that first.