[MARATHON DISCONTINUED] YES! The TL7600 can be paired with some AT&T Cordless phone bases. To register the headset to an AT&T DECT cordless telephone base: 1 - Make sure the battery is properly installed in the headset (see page 7). The ON/OFF light flashes twice every five seconds to indicate the headset is not registered. 2 - Place the headset in the headset charger and allow it to charge for at least five minutes before beginning registration. Remove the headset from the charger and then place the headset back into the charger. 3 - On the telephone base of the cordless phone, press and hold the /HANDSET LOCATOR button until the IN USE light turns on (about four seconds) and release the button. If your telephone base has no HANDSET LOCATOR button: Press and hold the HOLD button until the screen displays Registering... Please wait, then release the button. -ORPress and hold the LOCATOR button until the screen displays Registering handset..., then release the button. 4 - The headset r…