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.

• Multi-line digital phone supporting up to seven lines with a 4 x 24 display
• Interactive soft keys for quick access to numerous features
• Six fixed ACD feature keys w/LED
• Headset, Emergency, Make Busy, Not Ready, Supervisor, In-Calls
• Dual Headset jacks and Supervisor Observe key (talk/listen or listen only)
• Supports two snap-in cartridge accessories for Analog Terminal Adapter (ATA) and External Alerter & Recording Interface
• Handset optional