Hi, I have an sl2100 whereby one handset ends up with a flashing green light on the top right. *9 cancels this, but I cannot see what the user is activating to make this happen.

Does anybody have any ideas?

I assume Handset is reference to a Telephone keyset?

Before you canceled the light did you look at the screen? If not look next time, it might give you a clue.

Chances are the customer is setting a station to station MSG. You can deny that In Station COS.

i think *0 will call the station that left the MSG