DECT 6.0 Digital technologym, Digital answering system
Caller ID/Call Waiting, Eliminate cell phone dead spots at home
Store 1000 directories from up to 2 different cell phones
Compatible with VTech models IS6100 DECT 6.0 cordless headset and MA3222 Bluetooth speakerphone, and AT&T model TL80133 DECT 6.0 speakerphone
For trouble shooting steps please refer the document named "Other Content" , which can be located under technical specifications on this page.