It could be "CALL WAITING".

It can be activated by pressing FEATURE *11, and it can be deactivated by pressing FEATURE **11.

You can figure out if this is your culprit by doing a print of the extension.


RULE NUMBER 2, "THINKIN' WON'T GET IT, YOU GOTTA KNOW!" RULE NUMBER 3, if you need TIER-3 SUPPORT on a LEGEND or MAGIX, go to http://home.comcast.net/~merlinman -