AudioCodes Mediant 4000 SBC User Manual page 901

User's Manual
Parameter
SBC Forking Handling Mode
configure voip > sbc settings > sbc-forking-
handling-mode
[SBCForkingHandlingMode]
configure voip > sbc settings > sbc-media-
sync
[EnableSBCMediaSync]
configure voip > sbc settings >
sbc-remove-sips-non-sec-transp
[SBCRemoveSIPSFromNonSecuredTranspo
rt]
Version 7.2
60. Configuration Parameters Reference
Description

[1] Enable = REGISTER messages of secondary
lines are terminated on the device.
Note: The device always forwards REGISTER
messages of the primary line.
Defines the handling of SIP 18x responses that are
received due to call forking of an INVITE.

[0] Latch On First = (Default) Only the first 18x is
forwarded to the INVITE-initiating UA. If SIP 18x
with SDP is received, the device opens a voice
stream according to the received SDP and
disregards any subsequent 18x forking responses
(with or without SDP). If the first response is 180
without SDP, the device sends it to the other side.

[1] Sequential = All 18x responses are forwarded,
one at a time (sequentially) to the INVITE-initiating
UA. If a 18x arrives with an offer only, then only the
first offer is forwarded to the INVITE-initiating UA
and subsequent 18x responses are discarded.
Enables synchronization of media between two SIP
user agents when a call is established between them.
Media synchronization means that the media is
properly negotiated (SDP offer/answer) between the
user agents. In some scenarios, the call is established
despite the media not being synchronized. This may
occur, for example, in call transfer (SIP REFER)
where the media between the transfer target and
transferee are not synchronized. The device performs
media synchronization by sending a re-INVITE
immediately after the call is established in order for
the user agents to negotiate the media (SDP
offer/answer).

[0] Disable = (Default) Media synchronization is
performed only if the RTP mode (e.g., a=sendrecv,
a=sendrecv, a=sendonly, a=recvonly, and
a=inactive) between the user agents are different
and synchronization is required.

[1] Enable = Media synchronization is performed if
the media, including RTP mode or any other media
such as coders, is different and has not been
negotiated between the user agents.

[2] Never = Media synchronization is never
performed.
Defines the SIP headers for which the device replaces
"sips:" with "sip:" in the outgoing SIP-initiating dialog
request (e.g., INVITE) when the destination transport
type is unsecured (e.g., UDP). (The "sips:" URI
scheme indicates secured transport, for example,
TLS.)

[0] = (Default) The device replaces "sips:" with
"sip:" for the Request-URI and Contact headers
only (and retains "sips:" for all other headers).

[1] = The device replaces "sips:" with "sip:" for the
901 Mediant 4000 SBC