This field specifies whether the POS Terminal is to connect to an external EFT Server or not.
The options are:
External - The POS Terminal is to connect to an external EFT Server. If this option is selected, you must enter the EFT Server Name as well.
None - The POS Terminal is not to connect to an EFT Server.
Filling in this field may not be necessary for the authorisation system you are using.