Specifications

Telephones and speakerphones
330 Hardware Description and Reference for Avaya Communication Manager
● Headset jack that is separate from the handset jack
● Built-in speakerphone with group listen operation
● Speaker, headset, mute buttons, each with LED indicators
● Volume up or volume down buttons for:
- handset,
- headset,
- speakerphone, and
- ringer
● 100-entry call log that records the total incoming answered, incoming unanswered, and
outgoing calls
● Downloadable firmware for future upgrades
● Automatic gain control on all audio interfaces
● Electronically stored part ID and serial number for use with Automatic Customer
Telephone Rearrangement
● Optional 24 button feature key expansion unit
● Optional analog interface application module
● Native support allows users to administer and maintain the 2420 using the associated
Feature Expansion Module
Avaya 6402 and 6402D digital telephones
The Avaya 6402 and 6402D are single-line digital telephones. The difference between the
Avaya 6402 and the 6402D is the Avaya 6402D is equipped with a 2-line by 24-character
display.
The Avaya 6402 telephone has the following characteristics:
● Built-in speakerphone with group listen operation
● Six fixed buttons:
- Speaker
- Feature
-Hold
- Redial
- Transfer
- Conference
● The feature button allows access by way of the dial pad, to 12 Communication Manager
features that do not require indicators or display messages.