Matrix PRASAR UCS - Page 610

Matrix PRASAR UCS System Manual 601
• Call Back on: For each Trunk you have set the Call Back feature, you must define ‘Call Back on’, that is,
you must select whether the number which must be called back should be the same number from which
the call was received or a different number.
When missed call is eligible for call back (matches with Incoming Number list), the 'Call Back on'
parameter determines the number on which the call back is to be made, that is, whether on the same
number from which the missed call is received or on a different number.
In countries where CLI received on trunks can be dialed out without any modification, you may select ‘CLI
Number’ as ‘Call Back on’ option.
In countries where CLI received on trunks can be dialed only after appropriate modification, you may
select “Alternate Number’ as the ‘Call Back on’ option. You may also select ‘Alternate Number’ as Call
Back on when you want the call back to be made to a different number.
•Call Back Incoming Number List: This is the list of numbers that are eligible for Call Back. The system
checks the CLI of the caller with this list to determine if the caller is eligible for a call back.
The system compares the number string programmed in the Call Back Incoming List with the number
string received as CLI.
Number string programmed in the 'Call Back Incoming Number List' shall be compared with the actual
received CLI.
The number string programmed in the Call Back Incoming Number List may be shorter than the number
string received as CLI, but only if the programmed number string completely matches with the received
CLI from the right towards left, the system will consider it as a complete match.
For example, if the programmed string is 263055 and the number string received in the CLI is
2652630555, the system will consider it a complete match. If the received CLI 912652630555, the system
will consider this caller too as eligible for a call back. Thus any CLI received with 263055 as the last 7 digits
will be considered as match found.
By default, ‘Number List’ 15 is assigned to all trunk port types as Call Back Incoming Number List. You
may program this list for all port types, or you may program another Number List and assign it to the
particular SIP trunk.
Refer the topic “Number Lists” for instructions on how to configure the Number List.
• Call Back Outgoing Number List: When the system finds a missed call eligible for a call back, it will make
the call back on the basis of the Call Back on option you selected and the Outgoing Number List you
programmed.
If you selected ‘CLI Number’ as “Call Back on’ option, you do not need to program the corresponding
outgoing number for the CLI received.
However, if the CLI received needs to be modified before being dialed out, then program the modified CLI
in the Outgoing List as the corresponding outgoing number for the CLI received.
The modified CLI or the Alternate number should be programmed at the same index number as the index
number at with the received CLI is programmed in the Call Back Incoming Number List. For example, for
the received CLI number string programmed at Index 15 in the Call Back Incoming Number List, the