TP AW ATT Corded Speakerphoe This ATT CL2909 Speakerphone with caller IDcall waiting can be used flat on a tabletop or mounted on a wall and does not require AC power for operation. The CL2909 features a speakerphone for handsfree use and a Data port that allows the use of another device such as a modem, Fax machine, or answering system with the same wall jack. The CL2909 also features a 14number Memory for fast Dialing and has a directory that can store up to 25 additional numbers with names.