- Digital phone
- 12-line operation
The M3904 Professional Telephone is a multi-line digital phone supporting up to 12 lines. Enhancements include offering the largest display in its class, a Personal Directory, Call Log, and a variety of user selectable options. Support for Personal Directory PC Utility allows you to create a directory of up to 100 names and download it to the phone. The M3904 (phase 3 M3904 only) also supports Full Duplex Handsfree with the addition of the new Full Duplex Handsfree Accessory that easily snaps into the Accessory Connection Module.