Intercom between handsets. Handset speakerphone. Handset Vibrating Ringer. Headset compatible. Sound Select. Analog and Digital Clock Displays. Call transfer. Hold. Line In Use Indicator. Mute. Household. SOHO. Backlit Keypad. Caller ID/Call Waiting Capability. Compatible with 5830 and 5840. 5.8 GHz. Visual Message Waiting Indicator. Caller ID. 50 name / number Caller ID log.
