Manual

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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.