In idle mode this module can be activated by sending the command 4#. After activating the module you will be asked to enter your user number followed by your password. The login command looks like this:
1 2 3 1 2 3 4 5 6 7
The first three digits always correspond to the user number and the last maximum of 7 digits correspond to the password. After the successful login you can now choose if you want to hear your new messages or if you want to send a new message.