AudioCodes Mediant 1000B User Manual page 404

Parameter
Remote Replaces Mode
sbc-rmt-replaces-
behavior
[IpProfile_SBCRemoteReplaces
Behavior]
Play RBT To Transferee
sbc-play-rbt-to-xferee
[IpProfile_SBCPlayRBTToTransf
eree]
User's Manual

[3] Handle Locally = Handles the incoming REFER request
itself without forwarding the REFER. The device generates a
new INVITE to the alternative destination according to the
rules in the IP-to-IP Routing table (the 'Call Trigger' field must
be set to REFER).
Note: The corresponding global parameter is
SBCReferBehavior.
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).
For example, assume that the device establishes a call between
A and B. If B initiates a call transfer to C, the device receives an
INVITE with the Replaces header from C. If A supports the
Replaces header, the device simply forwards the INVITE as is to
A; a new call is established between A and C and the call
between A and B is disconnected. However, if A does not
support the Replaces header, the device uses this feature to
terminate the INVITE with Replaces header and handles the
transfer for A. The device does this by connecting A to C, and
disconnecting the call between A and B, by sending a SIP BYE
request to B. Note that if media transcoding is required, the
device sends an INVITE to C on behalf of A with a new SDP
offer.
Enables the device to play a ringback tone to the transferred
party (transferee) during a blind call transfer, for the SIP entity
associated with the IP Profile (which does not support such a
tone generation during call transfer). The ringback tone indicates
to the transferee of the ringing of the transfer target (to where the
transferee is being transferred).

[0] No (Default)

[1] Yes
Typically, the transferee hears a ringback tone only if the transfer
target sends it early media. However, if the transferee is put on-
hold before being transferred, no ringback tone is heard.
When this feature is enabled, the device generates a ringback
404
Mediant 1000B Gateway and E- SBC
Description
Document #: LTRT-27044