2
Headsets
Headsets for 6400 Series telephones allow one-touch hands-free operation.
To answer a call, press and then the dial pad key on which the
Headset feature is administered. (For more information on using and
the dial pad keys to access features, see “Voice Features” later in this
manual.) To disconnect, press again and then the dial pad key on
which the Headset feature is administered.
Headsets consist of a headpiece (1 in Figure 2 below) and modular base
unit (2). The base unit plugs into the Handset jack (3).
FIGURE 2 The Headset Attached to a 6402D Telephone

Headpieces

The following headpieces can be used with these telephones:
Mirage® Receiver fits over either ear. Not for noisy environments.
StarSet® Eartip fits in ear canal.
Supra® Monaural — Adjustable headband and soft ear cushion.
Supra Monaural Noise-Canceling (NC) — Same as above with
noise-canceling microphone that reduces background noise transmission
by up to 75 percent.
Supra Binaural — Sound in both ears.
Supra Binaural Noise-Canceling (NC) — Same as above with
noise-canceling microphone on flexible boom; features windscreen and
reduces background noise transmission by up to 75 percent.
Feature
Feature
Feature
7
321
4

*

56
89
O#
Volume
12
3