AudioCodes Mediant 4000 SBC, User Manual

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CHAPTER 19 Coders and Profiles
Mediant 4000 SBC | User's Manual
Parameter Description
SBC Early Media
'Remote Early Media'
sbc-rmt-early-media-
supp
[IpProfile_
SBCRemoteEarlyMediaSuppor
t]
Defines whether the remote side can accept early media or
not.
■ [0] Not Supported = Early media is not supported.
■ [1] Supported = (Default) Early media is supported.
'Remote Multiple 18x'
sbc-rmt-mltple-18x-supp
[IpProfile_
SBCRemoteMultiple18xSuppor
t]
Defines whether multiple 18x responses including 180
Ringing, 181 Call is Being Forwarded, 182 Call Queued,
and 183 Session Progress are forwarded to the caller, for
the SIP entity associated with the IP Profile.
■ [0] Not Supported = Only the first 18x response is
forwarded to the caller.
■ [1] Supported = (Default) Multiple 18x responses are
forwarded to the caller.
'Remote Early Media Response
Type'
sbc-rmt-early-media-
resp
[IpProfile_
SBCRemoteEarlyMediaRespon
seType]
Defines the SIP provisional response type - 180 or 183 - for
forwarding early media to the caller, for the SIP entity
associated with the IP Profile.
■ [0] Transparent = (Default) All early media response
types are supported; the device forwards all responses
as is (unchanged).
■ [1] 180 = Early media is sent as 180 response only.
■ [2] 183 = Early media is sent as 183 response only.
'Remote Multiple Early Dialogs'
sbc-multi-early-diag
[IpProfile_
SBCRemoteMultipleEarlyDialo
gs]
Defines the device's handling of To-header tags in call
forking responses (i.e., multiple SDP answers) sent to the
SIP entity associated with the IP Profile. When the SIP
entity initiates an INVITE that is subsequently forked (for
example, by a proxy server) to multiple endpoints, the
endpoints respond with a SIP 183 containing an SDP
answer. Typically, each endpoint's response has a
different To-header tag. For example, a call initiated by the
SIP entity (100@A) is forked and two endpoints respond
with ringing, each with a different tag:
■ Endpoint "tag 2":
SIP/2.0 180 Ringing
From: <sip:100@A>;tag=tag1
To: sip:200@B;tag=tag2
Call-ID: c2
■ Endpoint "tag 3":
SIP/2.0 180 Ringing
From: <sip:100@A>;tag=tag1
To: sip:200@B;tag=tag3
Call-ID: c2
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