As DnRcomm said it needs to be a secondary extension key. By dialing 397 and pressing the key to program followed by the extension number only has made it a DSS button. This type of button dosn't ring only flashes when ringing and solid lite when person is on phone. Pressing this button only calls the extension. The only way to program this as a secondary extension key is you need to have a PC that has the database programming software. If you have this software, any of us here will be glad to walk you through the programming steps.


Rhett