Thrane&Thrane Thrane IP Handset, Руководство пользователя

Страница: 84 / 152

Chapter 3: Operating the IP Handset
72 IP Handset menus
4. When stealth is set up and Use Stealth is selected in this menu, you can
activate and deactivate it from the main screen by selecting Options >
Stealth .
To set call services (Noise cancellation and Automatic secure)
The IP Handset has efficient noise suppression software which you can switch
on or off, depending on the noise level in your environment. Noise
cancellation should only be selected when the handset is used in a noisy
environment.
To set up Noise cancellation, do as follows:
1. From the Settings menu, select Call
services.
2. Press Select for Noise cancellation .
When the IP Handset is used in networks
where all calls must be secure, it can be set up
to start a secure session automatically each
time when a call is initiated and the peer
IP Handset goes off-hook.
To set up Automatic secure , do as follows:
1. From the Settings menu, select Call services.
2. Press Select for Automatic secure for all calls to be encrypted secure calls.
Note
If you want to make a single secure call do not select Automatic
secure . Use the option Go secure , proceed as described in To make a
secure call on page 51.