Time Change How do you change the time and date on the Panasonic KX-T7668 Corded Phone please

It can be changed from any phone that lets you into programming. We usually give everybody access to make changes like this, but by default, the phone designated as the Manager or Operator is usually given that access. Try ext 101.

When you get there, press PROGRAM **1234. If your display reads SYS-PGM No?, then it will work. Dial 000 and STORE. You will see the Date. Press SP PHONE! Now you will see the time. Dial the new time and press STORE. Press HOLD and PROGRAM to exit or just pick up the handset and drop it back down.

If for some odd reason you can't get into programming from ext 101, then you might have to search for the manager's phone, or call your installer to make one or all of the phones have access to programming.
They can allow you access to other programs, or even give you the installer password to get into all the programming.

Carl