DSG Technology IM 2000, User Manual

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Chapter 4 Integration with PBX
4-12
Answer Signal Some PBX provides the Answer Signal when the call is picked up by
the extension. When this signal is received, the call will be released.
No-Answer Timeout Some PBX does not send Ringback Signal when transferring the
call. In such case IM1200 will hold the call for the No-Answer Timeout period and
retrieve the call after the timeout.
6. Click OK or Apply when done with all the modifications.
Setting Up IM1200 in Semi-Supervised Mode
This mode is the most commonly used when the PBX does not send a complete set of In-
Band DTMF Strings. In order for Semi-Supervised Transfer to function properly, certain
parameters from the Supervised Transfer and Non-Supervised Transfer Modes need to be
set correctly first. The best way to set up Semi-Supervised Mode is to select the PBX in
question from the PBX list first
(For Select PBX, see page 4-2) , then proceed to select and
modify the Semi-Supervised Mode parameters as needed.
Busy Recall, Ring Release
Calls will initially be handled in the Supervised Mode when transferred, and IM1200 will
monitor for the Busy CPT or the Busy DTMF Signal. If the Busy CPT or the Busy DTMF
Signal is not detected right away, the transfer is changed to Non-Supervised mode and the
line released. It then relies on the In-Band DTMF String from the PBX to tell if the call has
been No-Answered.
It is essential then, the Busy CPT or the Busy DTMF Signal in Supervised mode, and the In-
Band DTMF parameters in Non-Supervised mode, as well as the In-Band DTMF String for
the No-Answer situation, need to be well defined before this operation can work.
Call Pickup
Similar to Busy Recall, Ring Release operation, the call is retrieved if it is detected Busy right
away and released if not. But instead of relying on the In-Band DTMF String from the PBX
to tell the call is not answered, IM1200 will automatically use the Call Pickup function of the
PBX to retrieve the call if the call is not answered by the extension after a pre-defined
amount of time.
To set up Semi-Supervised Mode using Call Pickup:
1. Choose System Parameters > PBX Parameters.
2. Click Edit tab, a PBX Parameters dialog page appears.
3. Choose the Semi-Supervised tab.
4. Define the following parameters:
Enable Call Pickup
Check this box to enable the Call Pickup operation.
Call Pickup Sequence The sequence to pick up the call that is ringing the extension
which is not answering to announce the No-Answer status to the caller.
Call Pickup No-Answer Timeout IM1200 will attempt to pick up the call after this
timeout, and announce to the caller the extension is not available.
Call Pickup Channels
IM1200 will use the selected channels to do Call Pickup
operation.
5. Click OK or Apply when done with all the modifications.