2N NetStar Admin manual - Manual (Page 252)

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Figure 3: View of external extension "Routing" Tag
As shown in Figure 3, incoming calls from an external station are routed to DISA.
Specific settings of the DISA direct inward dialling are shown in Figure 4. With this
configuration, the incoming call is routed to the Default router and then a 10-second
dialling timeout follows, which is then detected by the DTMF detector (its inclusion
requires checking the DTMF option in the lower part). If the 10-second time limit
expires without detecting the dialling, the call is then routed to the Operator extension.