Version 7.2 445 Mediant 800B Gateway & E-SBC
User's Manual 20. Coders and Profiles
Parameter Description
[IpProfile_SBCAllowedCoder
sMode]
[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 on page 672.
Allowed Video Coders
allowed-video-coders-group-
name
[IpProfile_SBCAllowedVideo
CodersGroupName]
Assigns an Allowed Video Coders Group. This defines permitted video
coders when forwarding video streams to the SIP entity associated
with the IP Profile. The video coders are listed in the "video" media
type in the SDP (i.e., 'm=video' line). For this SIP entity, the device
uses only video coders that appear in both the SDP offer and the
Allowed Video Coders Group.
By default, no Allowed Video Coders Group is assigned (i.e., all video
coders are allowed).
To configure Allowed Video Coders Groups, see Configuring Allowed
Video Coder Groups on page 435.
Allowed Media Types
sbc-allowed-media-types
[IpProfile_SBCAllowedMedia
Types]
Defines media types permitted for the SIP entity associated with the IP
Profile. The media type appears in the SDP 'm=' line (e.g., 'm=audio').
The device permits only media types that appear in both the SDP offer
and this configured list. If no common media types exist between the
SDP offer and this list, the device drops the call.
The valid value is a string of up to 64 characters. To configure multiple
media types, separate the strings with a comma, e.g., " audio, text"
(without quotes). By default, no media types are configured (i.e., all
media types are permitted).
Direct Media Tag
sbc-dm-tag
[IPProfile_SBCDirectMediaT
ag]
Defines an identification tag for enabling direct media (no Media
Anchoring) for the SIP entity associated with the IP Profile. Direct
media occurs between all endpoints whose IP Profiles have the same
tag value (non-empty value). For example, if you set the parameter to
"direct-rtp" for two IP Profiles "IP-PBX-1" and "IP-PBX-2", the device
employs direct media for calls amongst endpoints associated with IP
Profile "IP-PBX-1", for calls amongst endpoints associated with IP
Profile "IP-PBX-2", and for calls between endpoints associated with IP
Profile "IP-PBX-1" and IP Profile "IP-PBX-2".
The valid value is a string of up to 16 characters. By default, no value
is defined.
For more information on direct media, see Direct Media on page 670.
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