Two-handset answering system features Connect to Cell technology to make and receive calls from your cellular plan while enjoying the comforts of a home phone system. Pair up to two cellular lines and one landline with your cordless system. Then, enjoy the freedom to make and receive calls on all three lines at once. Mobile notifications let you know when your Android mobile phone (sold separately) receives a text, e-mail, social media update or calendar reminder. Downloadable phonebook directory stores up to 6,000 cellular phonebook entries to the cordless handsets. Caller ID Announce audibly reveals the name of your caller so you don't have to scramble for the handset to see your caller. DECT 6.0 digital technology delivers excellent sound quality and range while ensuring wireless networks and other electronic devices don't interfere with conversations. Answering system also includes HD audio with equalizer, push-to-talk, quiet mode and more.