AudioCodes Mediant 800 - Page 464

CHAPTER19 Coders and Profiles
Mediant 800 Gateway & E-SBC | User's Manual
Parameter Description
■ The corresponding global parameter is
TranscodingMode.
'Extension Coders Group'
sbc-ext-coders-group-
name
[IpProfile_
SBCExtensionCodersGroupNa
me]
Assigns a Coder Group for extension coders, which are
added to the SDP offer in the outgoing leg for the SIP entity
associated with the IP Profile. This is used when
transcoding is required between two IP entities (i.e., the
SDP answer from one doesn’t include any coder included
in the offer previously sent by the other).
For more information on extension coders and transcoding,
see Coder Transcoding. To configure Coder Groups, see
Configuring Coder Groups.
'Allowed Audio Coders'
allowed-audio-coders-
group-name
[IpProfile_
SBCAllowedAudioCodersGroup
Name]
Assigns an Allowed Audio Coders Group, which defines
audio (voice) coders that can be used for the SIP entity
associated with the IP Profile.
To configure Allowed Audio Coders Groups, see
Configuring Allowed Audio Coder Groups. For a description
of the Allowed Coders feature, see Restricting Coders.
'Allowed Coders Mode'
sbc-allowed-coders-mode
[IpProfile_
SBCAllowedCodersMode]
Defines the mode of the Allowed Coders feature for the SIP
entity associated with the IP Profile.
■ [0] Restriction = In the incoming SDP offer, the device
uses only Allowed coders; the rest are removed from
the SDP offer (i.e., only coders common between those
in the received SDP offer and the Allowed coders are
used). If an Extension Coders Group is also assigned
(using the 'Extension Coders Group' parameter,
above), these coders are added to the SDP offer if they
also appear in Allowed coders.
■ [1] Preference = The device re-arranges the priority
(order) of the coders in the incoming SDP offer
according to their order of appearance in the Allowed
Audio Coders Group or Allowed Video Coders Group.
The coders in the original SDP offer are listed after the
Allowed coders.
■ [2] Restriction and Preference = Performs both
Restriction and Preference.
Note:
■ The parameter is applicable only if Allowed coders are
assigned to the IP Profile (see the 'Allowed Audio
Coders' or 'Allowed Video Coders' parameters).
■ For more information on the Allowed Coders feature,
see Restricting Coders.
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