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Configuring Network Use
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Configuring Call Preferences
Call preferences help you manage the network bandwidth used for calls. For
example, you can specify the default and optional call settings for outgoing
calls, and limit the call speeds for incoming calls.
If you have just set up your network, use the screens described in this section
to specify your call settings. If your network has been set up for some time, but
you notice that your call quality is not optimal, you may want to change some
of these call preference settings to increase the quality of your calls.
To configure call preferences:
1.
Go to System > Admin Settings > Network > Call Preference .
2.
Configure these settings:
Setting Description
Enable Basic
Mode Enables a limited operating mode that uses H.261 for video
and G.711 for audio. This mode provides administrators with a
workaround for interoperability issues that cannot be solved
using other methods. The Basic Mode setting stays in effect
until you change it.
Enable H.239 Specifies standards-based Content data collaboration.
Note that some H.323 devices do not recognize this new
standard. You can try disabling this option if you suspect a
compatibility issue.
Enable IP H.323 Allows the system to make IP calls.
Enable SIP Allows the system to use SIP when connecting IP calls.
Enable ISDN
H.320 Allows the system to make ISDN calls.
This selection is only available when the system has ISDN
networking capability.
Enable Voice
Over ISDN If you have the ISDN option, this allows the system to make
voice-only calls to phones connected to an ISDN network,
such as an organization’s PBX.
Enable ISDN
Gateway Allows users to choose whether to place IP-to-ISDN calls
through a gateway.