AudioCodes Mediant 4000 SBC - Page 456

CHAPTER19 Coders and Profiles
Mediant 4000 SBC | User's Manual
Parameter Description
■ [5] Keep URI (user@host) = The device forwards the
REFER message without changing the URI
(user@host) in the SIP Refer-To header. If you
configure the 'Remote Replaces Mode' parameter (see
below) to any value other than Keep as is, the
devicemay modify the 'replaces' parameter of the
Refer-To header to reflect the call identifiers of the leg.
This applies to all types of call transfers (e.g., blind and
attendant transfer).
Note:
■ You can override the parameter's settings using
Message Manipulation rules configured with the
AudioCodes proprietary SIP header, X-AC-Action. For
more information, see Using the Proprietary SIP X-AC-
Action Header on page588.
■ The corresponding global parameter is
[SBCReferBehavior].
'Remote Replaces Mode'
sbc-rmt-replaces-
behavior
[IpProfile_
SBCRemoteReplacesBehavior]
Enables the device to handle incoming INVITEs containing
the Replaces header for the SIP entity (which does not
support the header) associated with the IP Profile. The
Replaces header is used to replace an existing SIP dialog
with a new dialog such as in call transfer or call pickup.
■ [0] Standard = (Default) The SIP entity supports
INVITE messages containing Replaces headers. The
device forwards the INVITE message containing the
Replaces header to the SIP entity. The device may
change the value of the Replaces header to reflect the
call identifiers of the leg.
■ [1] Handle Locally = The SIP entity does not support
INVITE messages containing Replaces headers. The
device terminates the received INVITE containing the
Replaces header and establishes a new call between
the SIP entity and the new call party. It then
disconnects the call with the initial call party, by
sending it a SIP BYE request.
■ [2] Keep as is = The SIP entity supports INVITE
messages containing Replaces headers. The device
forwards the Replaces header as is in incoming
REFER and outgoing INVITE messages from/to the
SIP entity (i.e., Replaces header's value is
unchanged).
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