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Configuration
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CSG SIP Communications Gateway
Setting Codec Preferences
For each user extension, you can allow or disallow specific codecs to be used. Perform the following
steps to set the codec preferences for a user extension:
1. Select Users from the Telephony tab to display the Users Configuration page (FIG. 16).
2. Select an existing user extension or click New to create a new extension.
3. Click Allow/Disallow Codecs. The Codec Preferences dialog box opens (FIG. 17).
FIG. 17 Codec Preferences dialog box
4. Click Populate List of Codecs. You only need to click this button when there are new codecs to add
to the list.
5. Select a codec from the Allowed or Disallowed areas, and click the appropriate directional button to
move the codec to its appropriate area. Repeat this for each codec you want to move.
6. Click Update. The dialog box closes and the Users Configuration page displays.
User Configuration Options (Continued)
Insecure Insecure in a SIP parameter used to determine peer matching.
The setting determines whether an insecure connection is
allowed or if authentication is required. The valid options are:
• port - Select this option to match against only an IP address.
This setting is useful if you have multiple endpoints behind a
NAT device.
• invite - Select this option to match against both the IP address
and port number provided in the Contact field of a SIP header.
A call will be allowed without authentication if a match is found.
• very - Select this option if you do not want to require
authentication upon an initial value.
• no - Select this option if you do not want to allow an insecure
connection.
Flash Flash timing defines the duration, in milliseconds, the CSG uses if
it is sending a flash signal to another system.
RXFlash Receiver Flashtime defines the duration, in milliseconds, the CSG
requires to consider a flash operation that it receives to be valid.