2N NetStar Admin manual - Manual (Page 169)

169
DISA
DISA
The DISA (Direct Inward System Access) routing object is used for automatic call
acceptance by the PBX with a subsequent DTMF transfer option and playing of the
selected tone. In conjunction with suitable routers, you can create the IVR structure.
This routing object is particularly suitable for GSM and CO virtual ports where you have
to answer incoming calls 'Manually' to give the calling user an opportunity to influence
routing (these virtual ports do not support the dial-in option).
DISA Setting
To configure the DISA routing object use the Routing – Routing objects –
menu. A list of available DISA objects is displayed on the left. Add, DISA/IVR objects
delete or rename the DISA objects using the context menu. Moreover, the following
three options are available:
Default – use this option to add three basic DISA modes – DISA_DEN,
DISA_NOC, DISA_ME.
Update – use this option to update the existing default DISA services.
Once a DISA object is selected, the configuration options get displayed to the right.
Strategy is the first parameter to be configured, determining the behaviour of the
entire DISA routing object. Choose Immediate or Alerting. Different DISA object
parameters can be configured according to the strategy selected.
Immediate strategy
This strategy represents a common DISA concept. When a call comes to the port, it is
answered, the DTMF detector is connected and the selected progress tone is played to
the calling user. The numbers to be dialled are searched in the preset router. If no digit
is detected before the timeout expiry, the call will be routed to the selected default
destination. The DTMF detector is active only in the period between the call answer and
the timeout end.