The 7406 D02/D04 has a message waiting indicator, 5 call appearance buttons, 8 buttons for conference, transfer, drop, hold, and more. Also features volume control, mute button, personalized ringing; has 18 programmable buttons for features including send all calls, leave word calling.
System requirements: Definity ECS family: System 75, G1 or G3 with TN754 B/C 4-wire/8-port digital line card
Fully remanufactured with one year warranty.