two days ago i ordered call forwarding. as per verizon it won't be activated until monday. the day i did that all my incoming calls started going straight to voice mail. i would then hav no dial tone - a few moments later i'd get a dial tone and be able to make outgoing calls. as of today i can't even get a dial tone. one of my phones has a message on the screen saying line in use. any ideas?
... calls are still going to voice mail.
I initially had this issue a few months back when I tried to use Do Not Disturb during the night hours. It seemed to work during the night hours, but it also kicked in and sent all calls to Voice Mail at many other times. Missed a few important calls during that period. Other folks faced the same problem, and the only fix we could find was to abandon the use of DND. Are you using DND by any chance?