re need to find out number to a phone line in article bd dea ecs umass edu alee ecs umass edu writes greetings situation i have a phone jack mounted on a wall i don t know the number of the line and i don t want to call up the operator to place a trace on it question is there a certain device out there that i can use to find out the number to the line call a friend long distance collect ask to speak with yourself when the operator asks for you you won t be there so ask the operator to leave your number she ll read it out in the clear scott
