4406D+ Telephone Features
2-line x 16-character display,
6 programmable feature buttons
Dedicated headset jack
Displays Caller ID and internal extension information
Provides such features as hold, transfer, conference, redial, mute
Built-in 2-way speakerphone

Compatibility
The 4406D+ Telephone is compatible with Merlin Magix and Avaya IP Office systems.
It requires a station port on a 412 TDL, 024 TDL, IP403, IP406, IP406V2, IP400 DS16, or IP400 DS30.