Before Cisco Unified SRST 4.3, the consultative transfer feature played dial tone and collected dialed digits until the digits
matched the pattern for consultative transfer, blind transfer, or PSTN transfer blocking. The after-hours blocking criteria
was applied after the consultative transfer digit collection and pattern matching.
The new feature modifies the transfer digit-collection process to make it consistent with Cisco Unified Communications Manager.
This feature is supported only if the transfer-system full-consult command (default) is specified in call-manager-fallback configuration mode and an idle line or channel is available for seizing,
digit collection, and dialing.
Requires two lines for consultative transfer. When the transferor party is an octo-line directory number, Cisco Unified SRST
selects the next available idle channel on that directory number. If the maximum number of channels of the directory number
are in use, consider another idle line on the transferor phone. If the auto-line command is configured on the phone, the specified autoline (if idle) takes precedence over other nonauto lines. If no idle
line is available on the transferor phone, initiates blind transfer instead of the consultative transfer.
During the consultative transfer, blocks the transferor line to the transferee party on the transferor phone to prevent being
stolen by other phones sharing the same directory number. When you press the Transfer softkey for consultative transfer, does
not display the Transfer softkey while collecting and dialing the digits on this seized consultative transfer call leg. The
method for consultative transfer pattern matching, blind transfer, PSTN transfer blocking, or after-hour blocking criteria
remain the same although the manipulation after the matching is different. On meeting the criteria for blind transfer, Cisco
Unified SMST stops the consultative transfer call leg, informs the Cisco IOS Software to transfer the call, and then stops
the original call bubble. Handles the PARK FAC code in the same way as an incoming call which requires applying a ten-second
timer by the Cisco IOS Software.
The enhancement, by default, collects the transfer digits from the incoming call leg. If necessary, you can configure the
system to collect the transfer digits from the original call leg. See the “Configuring Transfer Digit Collection Method” section
on page 198.
The error handling for transfer failure because of transfer blocking or interdigit timer expiration remains. It includes displaying
an error message on the prompt line and logging it if “debug ephone error” is enabled, playing a fast-busy or busy tone, and
stopping the consultative transfer call leg.
Requires no new configuration to support these enhancements.