Select the type of connection to the telephone network.
There are two types: public switched telephone network (PSTN) and private branch exchange (PBX).
Press any menu key.
Press the [][] keys to select [Admin Settings], and then press the [OK] key.
If you are requested to enter a password, enter the password using the number keys, and then press the [OK] key.
Press the [][] keys to select [PBX Selection], and then press the [OK] key.
Press the [][] keys to select [PSTN] or [PBX], and then press the [OK] key.
Confirm the setting, and then press the [] key.
Press the [Clear/Stop] key to return to the initial screen.
You can press the [] key to exit to the previous level of the menu tree.
A password for accessing the [Admin Settings] menu can be specified in [Admin Menu Lock].
For details about [Admin Menu Lock], see Administrator Settings.