Vertical Communications DXP - Manual (Page 7)

1.5 Introducing The DigiTech
Model 7714X Monitor Telephone
The DigiTech Monitor Telephone has the same physical appearance as
the DigiTech Speakerphone. Although they look alike, there is one
functional difference in the way the telephones operate. The Monitor
Telephone includes a speaker that allows you to listen to incoming
calls. Although this model also features a microphone, you can only use
it to answer a call announce.
1.6 Using the Speakerphone
NOTE: The instructions in this section apply to the monitor telephone
only in call announce, hands-free answer back operation.
When using your speakerphone, the microphone and loudspeaker are
farther away from you than when you use your handset. Both the signal
from the loudspeaker and the signal to the microphone must be
strengthened. When microphones and loudspeakers are close together
(such as in a speakerphone), additional amplification typically
generates a ringing sound (public address systems do this if the volume
is too high or the microphone is too close to a loudspeaker).
Your speakerphone’s sound-activated switches allow either the
microphone or the loudspeaker to be on at a given time. This means
that voice sounds travel in only one direction at a particular moment.
GCA70-314 Introducing the Telephone
Non-LCD Station User's Guide 1–3