DESC: The KX-TG2970B is simple to set up and program and features a 2-in-1 design, including a corded telephone on the base unit and a cordless phone in a separate, stand-up recharging base. You can also add up to 2 more cordless handsets for a total of 4 calling stations (3 handsets and 1 base). Convenient features available to each handset include Call Waiting, Caller ID for use with the Caller ID service that may be available through the local telephone company, 50-station Caller ID memory and Dialer, as well as a 50-station phone directory for each handset user. Other key features include: a built-in All-Digital Answering System; speakerphone on the base and each handset; up to five-way conferencing between the handsets or external calls; four-line, backlit LCD on the included handset; and a 2.5mm headset jack for use with an optional headset.