Device manager is the program you need.
The version of software you have is quite old now.
The default password changed with 4.60 software.
If you hunt around you should be able to find it.

As the version of software is old you don't need to choose the encryption option on the login screen.

Your next problem is that to use the ip phones you will need licenses. Any licenses installed on the system will have been removed when you defaulted it.
You will have to talk to a dealer to see what if any licenses have been assigned to the system.
They will require the mac address of the mp10a card.