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7406D, 7406BIS, and 7406 Plus Voice Terminals
Speakerphone (on 7406BIS and 7406 Plus)
The 7406BIS and 7406 Plus (7406D05A—7406D08A) voice terminals are equipped with a built-
in speakerphone. The Speakerphone capability allows a user to engage in a hands-free conver-
sation with the far-end party. The speakerphone can be turned off or on (on the 7406BIS voice
terminal, use the SPEAKER button; on the 7406 Plus voice terminal, use the
SPEAKER/RESET SPKR button), can be muted (use the MUTE button), and the volume can be
raised and lowered (use the Volume ‘‘arrow’’ button).
The Speakerphone feature on the 7406 Plus also allows the user to adjust the speakerphone for
optimal performance. By pressing the SELECT button and then the SPEAKER/RESET SPKR
button (if the voice terminal is set for the Speakerphone feature), the user hears a set of tones as
the speakerphone performs an acoustic test of the environment. When the tones stop, the
speakerphone has finished adjusting itself and is ready for use. The user
must
reset the speak-
erphone in any one of three instances: whenever the voice terminal is moved to another place
(even in the same room), whenever the green light next to the SPEAKER/RESET SPKR button is
fluttering, and, when, in the unlikely event, the speakerphone is making a squealing sound.
On the 7406D voice terminals, the volume control for the speaker is a sliding control also used for
the tone ringer volume. On the 7406BIS voice terminal, the volume control button is labeled
SPEAKER VOLUME and double arrows, one for raising the volume level and one for lowering the
volume; on the 7406 Plus voice terminal, the volume control button is labeled with the word
VOLUME and the double arrows for raising and lowering the volume.
Loudspeaker/Spokesman/Speaker Feature
The 7406D (7406D01A—7406D04A) voice terminals are equipped with a built-in, listen-only
loudspeaker/Spokesman capability. Use the SPEAKER button for turning on and off the
loudspeaker.
The 7406BIS and the 7406 Plus (7406D05A—7406D08A) voice terminals come with a built-in
speakerphone that can be optioned for Spokesman operation. (Since changing the internal
jumper setting requires removing the back of the voice terminal, converting the voice terminal
Speakerphone feature to the Speaker feature should be done
only
by qualified service person-
nel.) These voice terminals are shipped with the Speakerphone setting in place.
The Spokesman capability allows a user to engage in a one-way conversation with the far-end.
Specifically, the user can only listen to the far-end; the user is not able to transmit his voice over
the Spokesman. To speak with the far-end, the user must use the handset.
With the 7406D and 7406BIS voice terminals, the handset and Spokesman capability can be
used simultaneously. With the 7406 Plus voice terminal, the handset and speaker
cannot
be
used at the same time.
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