The M3903 Enhanced Telephone is a multi-line digital phone supporting
up to four lines and/or features. The productivity-enhancing Call Log
feature displays the incoming and outgoing calls while the fixed feature keys
allow you to switch easily from handset or handsfree to headset use,
personalize the phone using the Options list, and quickly access your voice
messaging system.

Features include:

• Multi-line phone with three-line x 24-character display
• Call Log for incoming and outgoing calls
• Interactive soft keys for quick access to numerous features
• Fixed feature keys:
  o Hold, Goodbye, Volume Control, "Smart" Mute and Headset w/LED, Options, Message, Call Log (Includes Redial), Applications, Shift
  o Handsfree with LED
• Direct-connect headset port
• Supports two snap-in cartridge accessories for Analog Terminal Adapter or External Alerter & Recording Interface