- The AT&T ML17929 2-Line Corded Office Phone System with Caller ID/Call Waiting features speakerphone capabilities for up to two separate phone lines.<br/>- This easy-to-use corded speakerphone allows you to program up to 18 of your most-phoned contacts into the built-in memory for easy speed dialing.<br/>- 3-party conferencing lets you chat with two friends at once and selectable ringtones let you choose the sound of your ring.<br/>- This 2-line corded phone also features a line status indicator and automatic line selection.<br/>- 2.5mm headset port<br/>- Inaudible mute
