4 navigation keys for browsing feature menus and programming
Dedicated Merlin Magix headset jack
Displays Caller ID and internal extension information
Provides such features as hold, transfer, conference, redial, and mute
Built-in 2-way speakerphone
Part Number(s):
                       Â
- 4400-B12 / 108199050
                       Â
- 4400-W12 / 108199043