AudioCodes Mediant 500 MSBR, Руководство пользователя

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Version 7.2 425 Mediant 500 MSBR
User's Manual 23. Coders and Profiles
Parameter Description
SBC Forward and Transfer
Remote REFER Mode
sbc-rmt-refer-behavior
[IpProfile_SBCRemoteReferBeha
vior]
Defines the device's handling of SIP REFER requests for the IP
entity (transferee - call party that is transfered to the transfer
target) associated with the IP Profile.

[0] Regular = (Default) SIP Refer-To header value is
unchanged and the device forwards the REFER message as
is.

[1] Database URL = SIP Refer-To header value is changed
so that the re-routed INVITE is sent through the device:
a. Before forwarding the REFER request, the device
changes the host part to the device's IP address and
adds a special prefix ("T~&R_") to the Contact user part.
b. The incoming INVITE is identified as a REFER-resultant
INVITE according to this special prefix.
c. The device replaces the host part in the Request-URI
with the host from the REFER contact. The special prefix
remains in the user part for regular classification,
manipulation, and routing. The special prefix can also be
used for specific routing rules for REFER-resultant
INVITEs.
d. The special prefix is removed before the resultant INVITE
is sent to the destination ((transfer target).

[2] IP Group Name = Changes the host part in the REFER
message to the name configured for the IP Group (in the IP
Groups table).

[3] Handle Locally = Handles the incoming REFER request
itself without forwarding the REFER. The device generates a
new NVITE to the alternative destination (transfer target)
according to the rules in the IP-to-IP Routing table (the 'Call
Trigger' parameter must be set to REFER).

[4] Local Host = In the REFER message received from the
transferor, the device replaces the Refer-To header value
(URL) with the IP address of the device or with the ‘Local
Host Name’ parameter value configured for the IP Group
(transferee) to where the device forwards the REFER
message. This ensures that the transferee sends the re-
routed INVITE back to the device which then sends the call to
the transfer target.

[5] Keep Host = The device forwards the REFER message
without changing the host part in the SIP Refer-To header.
This applies to all types of call transfers (e.g., blind and
attendant transfer).
Note: The corresponding global parameter is
SBCReferBehavior.
Remote Replaces Mode
sbc-rmt-replaces-behavior
[IpProfile_SBCRemoteReplaces
Behavior]
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