4.3.6.Brekeke PBX User Extensions and User Authentication Accounts
Password under [Brekeke PBX admintool] > [Extensions] > [Users] > [Account] page is the password for user loggin into their account from Brekeke PBX Admintool GUI.
For the password set in user account under [Brekeke PBX admintool] > [SIP Server Admin] > [User Authentication], it is for authorizing UA REGISTER and incoming calls INVITE requests to make sure the requests are from authorized users.
It is needed when Authentication for REGISTER and/or INVITE is set on at [Brekeke PBX admintool] > [SIP Server Admin] > [Configuration] > [SIP] page.