AudioCodes Mediant 500 E-SBC, User Manual

Page: 326 / 920

User's Manual 326 Document #: LTRT-10437
Mediant 500 E-SBC
Parameter Description
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.
Web: SDP Ptime Answer
CLI: sbc-sdp-ptime-ans
[IpProfile_SBCSDPPtimeAnswer] Defines the packetization time (ptime) of the coder in RTP
packets for this SIP entity. This is useful when implementing
transrating.

[0] Remote Answer (Default) = Use ptime according to
SDP answer.

[1] Original Offer = Use ptime according to SDP offer.

[2] Preferred Value= Use preferred ptime for negotiation,
if configured by the 'Preferred Ptime' parameter.
Web: Preferred Ptime
CLI: sbc-preferred-ptime
[IpProfile_SBCPreferredPTime] Defines the packetization time (in msec) for this SIP entity if
the 'SBC SDP Ptime Answer' parameter is set to Preferred
Value.
The valid range is 0 to 200. The default is 0 (i.e., preferred
ptime is not used).
Web: Use Silence Suppression
CLI: sbc-use-silence-supp
[IpProfile_SBCUseSilenceSupp] Defines silence suppression support for this SIP entity.

[0] Transparent (default) = Forward as is.

[1] Add = Enable silence suppression for each relevant
coder listed in the SDP.

[2] Remove = Disable silence suppression for each
relevant coder listed in the SDP.
Web: Play RBT To Transferee
CLI: sbc-play-rbt-to-xferee
[IpProfile_SBCPlayRBTToTransferee] Enables the device to play a ringback tone to the transferred
party (transferee) during a blind call transfer, for this SIP
entity (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