# External Net Address

The External Net Address dialog box is accessed from the Online window (accessible when Alarmware™ is connected with an RTU via phone or via Comm Port). From the Online window, click on the External Net Address button:

This function allows you to either write a value to a net address that you enter, or to read the value of an address that you enter. To write, enter the value to write and the address and click on the Write button. To read, enter only the address and click on the Read button.