Instruction manual

The 4400-Series Telephone Family
3-4
Installation, SPM, Maintenance, and Troubleshooting Supplement
4400D 3
The 4400D model is a single-line telephone with a display. It operates like an
analog single-line telephone but has a display that shows feedback messages.
The 4400D telephone has the following fixed buttons:
■ Volume
■ Hold
■ Conf (Conference)
■ Trnsfr (Transfer)
■ Redial
4406D+ 3
The 4406D+ telephone has six line buttons and a speakerphone. A two-line
display provides feedback for features, including messages.
The fixed buttons on a 4406D+ telephone are:
■ Volume
■ Hold
■ Conf (Conference)
■ Trnsfr (Transfer)
■ Redial
■ Speaker
■ Mute