I've had this phone [Panasonic KX-TC2007SUB] for almost a year and it's worked fine up until now. When I plug in my cordless phone, the green light goes on, but when I hit the "talk" button, nothing happens, no dial tone. I've plugged in another phone to the same telephone line and that goes through just fine. Also, when I hit the Handset Locator botton on the phone set, the light on the base unit blinks but nothing on the cordless phone.
press function button on handset, scroll to initial setting, select by pressing right arrow, scroll to registration, select, select hs registration, follow directions on handset display, pressing mute on "new" base station, and ok on handset(plugged in). If you like, you can unregister with the "old" base unit first.
SOURCE: set number of rings
First press the menu button then scroll up or down to "initial setting" and press the select button. then select the set answering option then select the number of rings option now you can select the number of rings by scrolling up ^ or down. or you could just press the number on the keypad. Once you have selected the amount of rings you want press SAVE, then press off and your all set.
Usually answered in minutes!