600 Matrix PRASAR UCS System Manual
Read the topics “Auto Attendant”,“Direct Inward System Access (DISA)” and “Configuring 'Operator'” to
know more about the call respective call logic.
• Since this feature is essentially for callers, they must be aware of its functioning to be able to use it, that
is, disconnect the call within the Call Back Timer. If the caller does not disconnect within the Call Back
Timer, the call will be processed according to the normal incoming call logic.
• PRASAR UCS supports only one call back request at a time, for one trunk port. The second incoming
call on that trunk port will be processed by the system as per normal incoming call routing.
• For call back requests made from an OGTBG, if any of its trunks is busy, PRASAR UCS will support
only the last call back request in the OGTBG. Previous requests will be processed as per the normal
incoming call management logic.
How to configure
For this feature to function, you must configure the following parameters on the SIP Trunks on which you want to
use this feature:
• Enable Call Back: Select this check box on the desired SIP trunk port on which you want to activate the
Call Back on Trunk Port feature. By default, this check box is disabled for all SIP trunks.
• Call Back Timer: This is the duration for which the system waits for the caller to disconnect the call after
the system has found a matching number for the caller’s CLI in the Call Back Incoming Number List.
When the caller disconnects within Call Back Timer, the system applies Call Back on the trunk. If the caller
does not disconnect within the Call Back Timer, the incoming call management logic is applied for the call
on the trunk.
The range of this timer is from 01 to 99 seconds. By default, it is set to 10 seconds.
• Call Back Mode: Select from the following options how a ‘Call Back’ call answered by the remote party
should be routed:
• PIN Authentication-Multiple Calls: The system will process the call as per DISA call logic - allow
remote party to enter DISA mode with PIN-Authentication. On successful authentication (DISA Login)
the user is allowed to make calls or use features as allowed to him/her.
• CLI Authentication-Multiple Calls: The system will process the call as per DISA call logic, allowing
the remote party to enter DISA mode with CLI Authentication-Multiple calls as authentication method
and level of access.
• CLI Authentication-Single Call: The system will process the call as per DISA call logic, allowing the
remote party to enter DISA mode with CLI Authentication-Single call as authentication method and
level of access. Refer the feature description for “Direct Inward System Access (DISA)”.
• Operator: When the remote party answers the Call Back call, the system will route the call to the
Operator
90
.
By default, Operator is selected as the Call Back Mode.
90. 'Operator' is the station which is assigned to the SIP Trunk in the Trunk Feature Template. Refer “Trunk Feature Template” to know
more.
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