A maximum number of 20 entries can be stored in the router.
If Authentication is enabled, any incoming Diagnostics/Command Execution SMS messages are processed only if the sender's number exists in White List and the message password matches
with the password specified in the White List.
One blank entry is shown by default and you can add or delete an entry by pressing the "+" or "–" button. The White List numbers and passwords can be cleared by pressing the "Delete" button.
To add an entry, simply enter the appropriate phone number and password and click "Save".
Message Storage for Diagnostic Messages
Diagnostic messages (Diagnostic commands, acknowledgements and error notification messages) sent to remote destination are stored in Inbox/Outbox.
Security
In order to provide security for SMS command execution, it is recommended that all SMS commands be subject to successful authentication against the White List as well as setting a password
for each phone number entered.
This prevents unauthorized or accidental execution of SMS commands.