AT&T 210M Corded Phone is a basic phone that's reliable and easy to use. It uses a simple corded operation and is made of sturdy construction. The base can be placed on a convenient surface or can be mounted on the wall, saving on counter space. A 13-number memory dial feature lets to store your most frequently called numbers (up to 21 digits)--nine speed dials plus three emergency one-touch dials that are easy to program. A directory card is provided to keep track of all memory dial settings. A redial feature lets to quickly call the last outgoing number (up to 32 digits). Three ringer settings (off, low, and high) and three handset volume levels permit customization. Switchable tone and pulse dialing methods are also provided. The illuminated keypad helps to operate the phone even in darkly lit areas, while a prog/mute button on the handset lets you hear the other party while muting your side of the conversation..