I have three extensions say 1111 2222 and 3333. 1111 is the main number and is shared with 2222 and 3333 via multiline set key assignment. Currently 1111 (5330) is not responding. If i shut it down i still cant press any key except left or right page to scroll through different mutltiline keys. 2222 (5330) is also a multiline extension on 1111 and it is illuminated as if someone was on phone. I cant get 2222 off the phone on extension 1111. I cant delete this extensions as it say line in use. I cant delete the multiline set key assignemnt 2222 that is on 1111 as it says line is in use Help!!!!!!!