Cisco 7940 IP Phone "cancel disturb" Questions

cancel key to end the call. also always goes straight to voicemail with incoming calls and doesn't ring. call forwarding is turned OFF and so is the 'always' setting. Any solutions would be gratefully

...Disturb accidently. This can be turned on and off by pressing the DND softkey button along the bottom of the LCD display. You might need to press the 'more' softkey to display all options. I have the ...