Avaya 8403 Telephone (3233-03B) is a refurbished digital business telephone designed for compatible Avaya Definity communications systems. The 8403 provides a straightforward set of call-handling features for users who need dependable digital telephone operation without the additional complexity of larger multi-button models.
The telephone provides three call appearance/feature buttons for managing calls and accessing supported system functions. Dedicated Conference, Transfer, Drop, and Hold functions provide convenient access to commonly used business calling features. The Avaya 8403 also includes a group-listening speaker, allowing other people in the immediate area to hear the remote party when appropriate.
Avaya 8403 Telephone (3233-03B) Features
- Three call appearance/feature buttons
- Group-listening speaker
- Built-in Conference function
- Built-in Transfer function
- Built-in Drop function
- Built-in Hold function
- Digital telephone operation for compatible Avaya Definity systems
- Compact design for everyday business telephone applications
Group Listening Speaker
The Avaya 8403 is equipped with a group-listening speaker only. This feature allows nearby users to listen to the other party through the telephone’s speaker while the primary user continues the conversation using the handset. It should not be confused with a full two-way hands-free speakerphone.
Compatibility
- Compatible with Avaya Definity telephone systems
- Requires an available station port on a TN754/B/C, TN2181, or TN2224/B/CP digital station circuit pack
For businesses maintaining an existing Definity installation, the Avaya 8403 can provide a practical replacement for a worn or damaged digital telephone. Its familiar call-handling controls and relatively simple button arrangement make it suitable for offices, administrative areas, service departments, warehouses, and other locations where essential digital telephone functionality is required.
Includes
- One Avaya 8403 Telephone (3233-03B)

