Panasonic KX-TG7644 - Manual (Page 6)

Bluetooth ® devices
You can expand your phone system by registering the following units to a single
base unit.
Your Bluetooth cellular phone *1 : 2 max.
(for cellular calls: page 19)
Your Bluetooth headset *1 : 1 max.
(for a wireless hands-free conversation: page 55)
*1 Your cellular phone and headset must be Bluetooth wireless technology
compatible. For more details and the list of compatible cellular phones, please
visit our Web site: http://www.panasonic.com/link2cell
6 For assistance, please visit http://www.panasonic.com/help
Introduction