User's Manual 390 Document #: LTRT-27045
Mediant 1000B Gateway & E-SBC
To apply an Allowed Audio Coders Group for restricting coders to a SIP entity:
1. Configure an Allowed Audio Coders Group in the Allowed Audio Coders Groups table
(see description below).
2. In the IP Profile associated with the SIP entity (see ''Configuring IP Profiles'' on page
393):
• Assign the Allowed Audio Coders Group (using the
IpProfile_SBCAllowedAudioCodersGroupName parameter).
• Enable the use of Allowed Audio Coders Groups (by configuring the
IpProfile_SBCAllowedCodersMode parameter to Restriction or Restriction and
Preference).
The device also re-orders (prioritizes) the coder list in the SDP according to the order of
appearance of the coders listed in the Allowed Audio Coders Group. The first listed coder
has the highest priority and the last coder has the lowest priority. For more information, see
''Prioritizing Coder List in SDP Offer'' on page 623.
Note:
• The Allowed Audio Coders Groups table is applicable only to the SBC application.
• The Allowed Audio Coders Group for coder restriction takes precedence over the
Coder Group for extension coders. In other words, if an extension coder is not
listed as an allowed coder, the device does not add the extension coder to the
SDP offer.
• To configure "extension" coders for adding to the SDP offer for audio transcoding,
use the Coder Groups table (see Configuring Coder Groups on page 385).
The following procedure describes how to configure Allowed Audio Coders Groups through
the Web interface. You can also configure it through ini file (AllowedAudioCodersGroups
and AllowedAudioCoders) or CLI (configure voip > coders-and-profiles allowed-audio-
coders-groups; configure voip > coders-and-profiles allowed-audio-coders <group
index/coder index>).
 To configure an Allowed Audio Coders Group:
1. Open the Allowed Audio Coders Groups table (Setup menu > Signaling & Media tab
> Coders & Profiles folder > Allowed Audio Coders Groups).
2. Click New; the following dialog box appears:
Figure 19-2: Allowed Audio Coders Groups table - Add Dialog Box
3. Configure a name for the Allowed Audio Coders Group according to the parameters
described in the table below.
4. Click Apply.
5. Select the new row that you configured, and then click the Allowed Audio Coders
link located below the table; the Allowed Audio Coders table opens.
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