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M 3900 description Page 131 of 504
Telephones and Consoles Description, Installation, and Operation
• fixed feature keys: Goodbye, Message, Call log (including Redial List),
Applications, Shift, Goodbye, Hold, “Smart” Mute, and volume control
• Navigation cluster, Quit, and Copy
• three line by twenty-four character display area
• Call Log (includes Redial List)
• Group Listening
• on-hook dialing
• two accessory ports
• support for an amplified or unamplified headset
• Direct connect headset port
• Full icon support (with expansion module)