Thanks guys - it was the wrong phone (needed to be a 24 button) and they had one that we didn't know about. X100 was bad so we used X107 for the 24-btn set. All is good now, but there is no rs232 or X100 to perform future programming. Will eventually need to replace the 3X8 card I am assuming. Not sure if there is another way to administer the system? Thanks for the advice...it was helpful!!