Features and Specifications Manual
F6 – 331
Doc.
No. 8201 -
Release 1.0
July 2003
Full Duplex Handsfree
F-6
FEATURE
DESCRIPTION
The HFU-U( ) Unit is an add-on device to the DTU-Type Multiline Terminals
that provides full duplex speakerphone ability. An external microphone
is also provided with the HFU-U( ) Unit. The microphone has a push-to-
mute control button that turns the microphone off when it is pushed and
held down.
SYSTEM
AVAILABILITY
Terminal Type
All DTU-Type Multiline Terminals
Required Components
The HFU-U( ) Unit must be installed in each DTU-Type Multiline
Terminal.
OPERATING
PROCEDURES
1.
Press
P
and make an internal or external call.
2.
When muting is desired press and hold down the Mute key on the
external microphone.
SERVICE
CONDITIONS
General
This is a full duplex unit, however, it cannot be assumed to work as
well as a conference-room-type speakerphone. The echo cancellation
is geared towards a smaller area (such as an office) with average
acoustic realities. Large environment or areas that have hard surfaces
that tend to bounce sound have an adverse affect on the
speakerphone quality. The HFU-U( ) Unit can be turned to a half-
duplex mode in these cases.
To use the HFU-U( ):