The M3905 Call Center Telephone is the multi-line digital phone designed for the specialized needs of the most demanding call center agents and supervisors. The M3905 includes a direct-connect headset jack for agents, as well as a supervisor port. The supervisor port works in conjunction with the Supervisor Observe button to listen in on an active call, or listen and talk.

• Four-line x 24-character display
• Eight self-labeled programmable line/feature keys (One preassigned as Options)
• Six fixed ACD feature keys w/LED:Headset, Emergency, Make Busy, Not Ready,Supervisor, In-Calls
• Supervisor Observe (talk/listen or listen only)
• Message waiting LED
• Navigation cluster, Quit, and Copy
• Dual Headset jacks
• Handset optional
• Supports two snap-in cartridge accessories