- Raised display for better viewing
- Calibrating built-in speakerphone
- 22 programmable feature buttons without LEDs
- 10 flexible call appearance buttons
- 8 buttons for Transfer, Conference, Drop, Hold, Speaker, Volume, Mute, Select Ring and Display
- 9 additional programmable feature buttons with LEDs
- Includes jack for additional speakerphone or headset adapter
- Compatible with S201A Speakerphone (3152 007) for conference applications
- Requires available port on Digital Line Circuit Pack TN754B (63114)
