The AT&T Spirit 6 Button Phone includes 6 buttons with LED lights which can be used as lines or programmable features. The AT&T Spirit 6 Button Phone also includes a speakerphone with hands free answer on intercom, and speed dialing. The phone is also headset compatible. The AT&T Spirit 6 Button Phone has fixed feature buttons which include: hold button, transfer button, conference button, recall button, intercom button, drop button, volume controls, mute/hfai button, memory button and speaker button. The AT&T Spirit 6 Button Phone is compatible with all Spirit phone systems including the Spirit 308, 616, 1224, and 2448 phone systems. A 6-button telephone in a 308/616 system has six line buttons. If your system has fewer than six incoming lines, some of the buttons will not be used. ———————————————————————————————————- Feature Buttons Message Waiting Indicator: Shows that you have a message waiting. Hands-Free Answer Indicator Light: Shows whether the Hands-Free Answer on Intercom feature is on or off. Turned on and off using the MUTE/HFAI button. Volume Control: Adjusts the volume of the ringer, speaker, and receiver. Mute/HFAI Button and Indicator Light: Used to turn off the sound to the other person. Also used to turn on and off the Hands-Free Answer on Intercom feature. Speaker Button and Indicator Light: Used to turn the speakerphone on and off. Memory Button: Used to store and dial SpeedCall numbers. Intercom Buttons and Indicator Lights: Used for placing and receiving intercom calls. Also used for personal programming, feature codes, and accessing lines without buttons, depending on the system. Recall/Drop Button: Used to disconnect intercom calls without hanging up or used for switch-hook flash. Also used to drop a party from a conference. Hold/Pause button: Used with the Hold Feature. Also used to insert a pause into a number stored in memory. Transfer Button: Used to transfer a call to another intercom extension. Conference Button: Used to add lines or intercom extensions to a call.