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Accessories for the Avaya 3900 Series Digital Deskphones
Full Duplex Hands Free Module
The Full Duplex Hands Free Module provides simultaneous audio paths for
transmitting and receiving during hands free calls. The Full Duplex Handsfree
Module is available for the Avaya 3904 Digital Deskphone.
Headsets
Amplified headsets are compatible with your Avaya 3900 Series Digital
Deskphone. The amplified headset is an option for noisy environments. An
amplified headset should be connected to the handset jack. The Headset Key is
not able to control a headset that is connected to the handset jack. In this
configuration, do not select Headset as the On hook default path.
For an amplified headset, adjust the volume using the Volume Control Bar on
your telephone before adjusting the volume on your headset amplifier. To
minimize distortion, the volume setting on the amplifier should be higher than the
volume setting on the telephone.
Unamplified headsets are compatible with the Avaya 3903 and 3904 Digital
Deskphones. An unamplified headset should be plugged into the headset jack.
With Headset selected as the On hook default path, you can make calls or answer
incoming calls by pressing a DN Key.
For an unamplified headset, access Volume Adjustment in the Options List to
adjust the headset volume and sidetone (Avaya 3904 Digital Deskphone) that
work best with the headset you are using. You may also use the Volume Control
Bar to adjust the headset volume while you are on a call. Refer to your distributor
for recommended headset types for use with the Avaya 3900 Series Digital
Deskphones.
Key-based Expansion Module
The Key-based Expansion Module provides additional line (DN) or feature keys
for the Avaya 3904 Digital Deskphone. You can add up to two Key-based
Expansion Modules, for a total of 44 additional line (DN) or feature keys.
Personal Directory PC Utility
The Personal Directory PC Utility provides a faster, easier way to create or modify
the Personal Directory on the Avaya 3904 Digital Deskphone. You can enter
names and numbers into a directory file on your PC, and download the file
directly from the PC to the Avaya 3904 Digital Deskphone through a serial port
connection. You can also upload the Personal Directory from the Avaya 3904
Digital Deskphone to your PC so that you can modify the directory. The PC and
the Avaya 3904 Digital Deskphone are connected using the Personal Directory
PC Utility Cartridge. The Computer Telephony Integration Adapter (CTIA) may
also be used to connect the PC and the Avaya 3904 Digital Deskphone when
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