Supported with Avaya IP Office Release 6.0 and higher 
 The Avaya 1403 telephone supports the following features:
      
        - Can only be used on the IP Office or Small Office – these terminals will not function on any other Avaya communications equipment.
- Supports 3 administrable feature buttons
- Each button includes dual LED’s (red, green) providing explicit status for the user
- Includes fixed feature keys for common telephone tasks including conference, transfer, drop, hold, mute
- 2-way speakerphone 
 
- 2 lines by 16 character display, backlit for easier viewing in all lighting conditions