13
Inter-Tel
®
Model 8602 User Guide
Muting the Microphone
If you are using a headset with a microphone, it is possible that you will still get some
echo (audio feedback).
To mute or disable the microphone on the interface
: while on a call, click the
Microphone icon
on the Main Display of the Model 8602.
The mute icon appears
.
To mute or disable the microphone using the Plantronics CS50-USB Wireless
Headset
: while on a call, press and release the Volume Control button on the headset.
Refer to the CS50-USB Wireless Headset System User Guide for more details.
Network Quality
The quality of the Model 8602 voice transmission, like that of any other device trans-
mitting on a data network, is dependent on several variables. These variables can
include the speed and capacity of the network configuration, type of connection, rout-
ing scheme, and amount of traffic being passed through the network. Inter-Tel has
used the latest technologies to ensure the best possible quality in all circumstances.
Under optimum conditions, voice quality will not be affected. However, heavy traffic,
complex routing schemes, or poor network connections may cause a degradation in
voice quality (distorted sound or choppy audio) or cause delays in transmission.
Firewall
You may be running a firewall on the computer where you will be running the Model
8602. Windows XP has built-in firewall protection. If the Windows built-in firewall
or other software firewall, such as ZoneAlarm
®
, is not configured correctly, the
Model 8602 may not connect to call processing or you may not hear audio. You need
to make sure the Model 8602 software application is added to your firewall as an
excepted application so it can receive information from the network.
To configure your Windows XP firewall:
1.
Select Start – Control Panel –
Windows Firewall
2.
In the General Tab make sure “On (recommended)” is selected. This enables the
Windows built-in firewall protection.
3.
Select the Exceptions tab and make sure Inter-Tel 8602 is selected under the
Programs and Services. The Windows firewall will not block incoming network
activity from the telephone system so the Model 8602 can operate.
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