Matrix PRASAR UCS - Call Back on Trunk Ports

598 Matrix PRASAR UCS System Manual
Call Back on Trunk Ports
What's this?
The feature Call Back on Trunk Ports is used to respond to missed calls from particular numbers on the SIP trunks
of PRASAR UCS.
When Call Back feature is enabled on a trunk port, and there is a missed call on that trunk port, the PRASAR UCS
determines if the calling number is eligible for a call back or not. It calls back the same number or an alternative
number programmed for that number, either from the trunk on which it was received or from a different trunk,
depending on the programming.
Employees at remote locations can use this feature to have the PRASAR UCS installed in their office call them
back, thereby saving on charges where ever applicable.
How it works
For this feature to work:
• Call Back must be enabled on the desired SIP Trunks.
• The CLI of those callers whom the system should call back must be programmed in the ‘Incoming Number
List’.
• The ‘Call Back Timer’ may be programmed. When the caller disconnects within the Call Back Timer, the
Call Back will be applied for that number.
• You must define ‘Call Back on’, that is, you must select whether the number which must be called back
should be the same CLI number which the call was received or an alternative number.
• The number on which call back is to be made must be programmed in the ‘Outgoing Number List’, if it is
not the same CLI number or if it is an alternative number.
• You must select whether the call back should be made using the same trunk port on which the call was
received or an Outgoing Trunk Bundle Group (OGTBG). If you select OGTBG, you must also program the
OGTBG.
• You may enable Least Cost Routing (LCR) on the OGTB if you want the system to select the least cost
trunk for calling back the missed call number. Program LCR accordingly.
• Select a ‘Call Back Mode’, that is, how the call should be routed when the call back is answered by the
remote party; whether it should be routed through DISA or Operator.
Following is an example of a Call Back on a SIP Trunk, when the above parameters are programmed.
• Caller A calls SIP Trunk -1.
• The system checks if the Call Back check box is enabled on the SIP Trunk -1.
• The check box is enabled.