The AT & T CL2909 speakerphone with caller ID / Call Waiting can be mounted flat on a table or a wall and requires no power to operate. CL2909 offers hands-free speakerphone use, and a data port that the use of other devices, such as allowing a modem, fax, answering machine or with the same socket. CL2909 also has a 14-number speed dial memory and the directory containing up to 25 additional numbers can save by name. The phone has caller ID function, the caller ID with call waiting support.