Panasonic

Any call that comes in on line 1 will ring twice then is re-directed to an outside line. I have gone into the system programming and 'Call forwarding-to outside line' is denied. I have also gone to each station and did a 'cancel call forwarding-to outside line (FWD/DND + 0 + #) and the calls on line one are still being transfered to an outside line (the outside line is not on the system. I have also checked that line one is not forwarded thru the C.O. I have opened up line one from the system and when I call line one, it will just ring and ring but as soon as I connect line one to the system, it will get transfered to the outside line. Any suggestions?????? I need to get this cleared up. Thanks in advance.