Infiniti I35 radio displays telephone won't switch

[SGiese]

2003 Infiniti I35 radio displays telephone and won't switch to any other mode, any clues?

[SGiese]

Well after 3 days of the radio only displaying TELEPHONE, I fired up the car this morning and the unit was powered off. Turned it on and it works!! There goes my great excuse in install the Alpine NAV unit I had been eyeing. FYI when i called the local dealer they told the radio was not a serviceable unit and they'd be happy to replace it.