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GCA70-377
Half-Duplex Speakerphone Guidelines
The speakerphone user guidelines in this section do not apply when your
speakerphone is operating in full-duplex mode. However, they are applicable
when operating in half-duplex mode or in "speech training" mode.
Background noise may prevent the sound-activated switches from operat-
•
ing properly. Avoid placing the speakerphone where it will detect sounds
from typewriters, keyboards, printers, paging systems, and other equip-
ment.
Speak slightly louder than normal and in a clear voice. For the micro-
•
phone to best detect your voice, speak within three feet of it and face the
telephone.
Raising the volume of the loudspeaker makes it easier for the
•
sound-activated switches in your telephone to select the distant party's
voice. Lowering the volume of the loudspeaker makes it easier for the
switches to select your voice.
Since the system takes several seconds to provide the best switching, con-
•
stant sound patterns—such as elongating your words and playing exter-
nally-supplied music—may prevent the sound-activated switches from
operating properly.
Place the telephone on a hard surface and away from table edges. Do not
•
place the telephone in corners or enclosures. Do not let obstructions come
between you and the microphone. Rooms with hard, flat surfaces that
reflect sound may affect the sound-activated switches.
If you are using a handset and the other party is using a speakerphone,
•
avoid breathing heavily into your microphone. Avoid other sounds that
may affect the distant telephone's sound-activated switches.
In some situations, such as when either you or the distant party is in a noisy
environment, you may have to lift your handset to ensure a clear conversation.
When using your speakerphone, the microphone and loudspeaker are farther
away from you than when you use a handset. Both the signal from the
loudspeaker and the signal to the microphone must be strengthened.
IP Speakerphone Station User's Guide
Speakerphone Characteristics
105
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