I recently did some network wiring in a closet and i added a extra extensions card to the ta824 that was mounted on the wall. but didnt do anything else since it isnt my field. (That has a ta824 in it. i cleaned up the wires somewhat . I must have touched something because now the doorbells dont ring the phones. When you press the button by the door it sounds like a dial tone which i am being told it always sounded like that. Any ideas to fix? (I called an installer and he said sounds like the unit is no good and needs to be changed.)

2) the phones all work but when you press an extension button all the extension lights turn red.
thanks any help would be appreciated.