logical partitioning policy check is performed between the geolocation
identifier of the device that is acting as a transferred party and the
geolocation identifier of the device that is acting as a transferred
partitioning handling takes place in the following circumstances:
a phone user uses Transfer softkey to transfer the call, the second press of
the softkey invokes and processes the Call Transfer feature.
other transfer mechanisms, such as Direct Transfer, On-Hook Transfer, Hook
Flash Transfer, and CTI-application-initiated Transfer results in invoking the
Call Transfer feature.
the transferred and the transferred destination specifies a PSTN participant.
Cisco Unified Communications Manager uses the
geolocation identifier information that associates with the transferred and
transferred destination device to perform logical partitioning policy checking.
Before splitting of the primary and secondary calls, and before
partitioning handles a denied call as follows:
Sends External Transfer Restricted message to the VoIP phone.
Normal Transfer—For a phone that is running SCCP, the primary
call remains on hold, and the consultation call remains active. For a phone
that is running SIP, both primary and consultation calls remain on hold and
must be resumed manually after the failure.
On-Hook, Hook-Flash and Analog-Phone-Initiated Transfer—Both the
primary and secondary calls are cleared by using the cause code=63
"Service or option not available" with a reorder tone from
Cisco Unified Communications Manager.
Number of Transfer Failures perfmon counter is incremented.
Multilevel Precedence and Preemption (MLPP)
switch initiates a call transfer between two segments that have the same
precedence level, the segments maintain the precedence level upon transfer.
When a call transfer is made between call segments that are at different
precedence levels, the switch that initiates the transfer marks the connection
at the segment that has the higher precedence level.
Communications Manager supports this requirement by upgrading the
precedence level of a call leg that is involved in a Call Transfer operation.
For example, party A calls party B with Priority precedence level. Party B then
initiates a transfer to party C and dials the Flash precedence digits when
dialing. When the transfer is complete, the precedence level of party A gets
upgraded from Priority to Flash.
Transfer feature is enabled automatically when MLPP is enabled, and the phones
support the Transfer softkey.
precedence level upgrade does not work over a trunk device such as an
intercluster trunk (ICT) or a PRI trunk.