A:Answer Hi - Here's how you can register the VTech IS6200 to the AT&T TL96547.
Step 1: Before you begin registration, make sure the headset is out of the charger.
Step 2: Press and hold FIND HS button on the telephone base for about four seconds and it shows Registering... Please wait. Release /FIND HS.
Step 3: Place the headset back to the charger. The telephone base will beep as an indication that the registration is successful.
Thank you,
-VTech Support