Expandable by up to 10 handsets, the AT&T SB67148 4-line cordless phone is great for office use. With a 3-party conferencing capacity, this AT&T cordless phone makes group chats convenient and easy. The 100-name and number directory of the AT&T SB67148 phone keeps all the important contacts at your fingertips. Communicating between handsets is a breeze, with the Push-To-Talk feature of this AT&T cordless phone. Moreover, with a 10 speed dial number option, this 4-line cordless phone allows you to store a code for a phone number, so that whenever required you can instantly dial the code instead of the entire number.