CHAPTER19 Coders and Profiles
Mediant 800 Gateway & E-SBC | User's Manual
Parameter Description
'Allowed Video Coders'
allowed-video-coders-
group-name
[IpProfile_
SBCAllowedVideoCodersGroup
Name]
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.
'Allowed Media Types'
sbc-allowed-media-types
[IpProfile_
SBCAllowedMediaTypes]
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_SBCDirectMediaTag]
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.
Note: If you enable direct media for the IP Profile, make
sure that your Media Realm provides sufficient ports, as
media may traverse the device for mid-call services (e.g.,
call transfer).
'RFC 2833 Mode'
sbc-rfc2833-behavior
[IpProfile_
SBCRFC2833Behavior]
Defines the handling of RFC 2833 SDP offer-answer
negotiation for the SIP entity associated with the IP Profile.
■ [0] As is = (Default) The device does not intervene in
the RFC 2833 negotiation.
■ [1] Extend = Each outgoing offer-answer includes RFC
2833 in the offered SDP. The device adds RFC 2833
only if the incoming offer does not include RFC 2833.
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