I have the message CO Not assigned ,How can assig CO?
panasonic kx-t7730
Press program button, select button you want to program, dial 0 then dial CO number as in 001 according to which CO line you wish to program. If you are not sure which CO line is missing, check the button programming by the same method. Press program button then any programmable button and it will be identified in the LCD screen. The CO lines may be 2 digit if you have an older system as in 01, 02, etc
×