All 7400 Series Telephones have the following features:

You can control the volume of the handset, ringer, and speaker with the Jog Dial Volume Control. Every model has an eXtra Device Port (XDP) that you can plug any Single Line Device into, i.e. Cordless Phone, Fax Machine, Modem, or Answering Machine. This port can either be set as having the same extension number as the Digital Telephone it is hooked to or it can have it's own extension number entirely. If you turn on Auto Answer at your telephone all Intercom calls to your extension will automatically activate your speakerphone so you don't have to stop what your doing and physically pick up the telephone to talk to the calling party. All 7400 Series Phones can initiate and receive Whisper Off Hook Call Announce (WOHCA) through the handset. Buttons not used for outside lines can be programed for Speed Dial, Direct Station Selection/Busy Lamp, Phantom Extension, and Voice Mail Transfer just to name a few. Each line can be assigned a up to 8 different ringing tones.

The Display Telephones have the following features:

Displays date and time while idle. When in use the display shows the duration of your current call. When the optional Caller ID card is installed in your system and your local Telephone Company provides both name and number they will display both. You can scroll through 10 Personal and 500 System Speed Names with the Jog Dial, as well as the Intercom Names and Telephone Features. When a call from another stations rings at your phone the display will show the calling parties extension number and name (if programed).