1.17.6 Direct Inward System Access (DISA)DescriptionAn outside caller can access specific PBX features as if the caller is an SLT extension user in the PBX, whenthe incoming call destination is a DISA floating extension number assigned to each DISA message. The callercan have direct access to features such as:• Placing an intercom call to an extension, operator or any floating extensions (e.g., modem for remotesystem administration, an external pager for TAFAS).• Calling an outside party via the PBX.• Operating some PBX remote features (e.g., FWD)DISA Intercept Routing—No DialIf the caller fails to dial any digits within a preprogrammed time period (DISA 1st Dial Time for Intercept) afterhearing the outgoing message (OGM), one of the following can be selected through system programming:a. Disable: The call will be terminated.b. Operator: The call will be redirected to the operator.c. AA-0, AA-9: The call will be redirected to the destination assigned to that AA number.→ [211] DISA Intercept TimeDISA Built-in Automated Attendant Number (DISA AA Service)After listening to the outgoing message (OGM), the caller may dial a single digit (DISA AA number). Thedestination for each DISA AA number can be assigned for each message. It is also possible to assign otherDISA floating extension numbers as the destination (Multistep DISA AA Service).If the caller dials a second digit within a preprogrammed time period (DISA 2nd Dial Time for AA), the DISAAA service is not employed.Outgoing Message (OGM)When a call arrives on a DISA line, a prerecorded DISA message will greet and guide the caller.Any extension assigned as the manager can record outgoing messages (OGMs). (® 1.17.5 OutgoingMessage (OGM))[Programming Example]OutgoingMessage(OGM) No.FloatingExtn. No.*1Automated Attendant No. Busy/DNDMessageNo.0 1 2 3 4 5 6 7 8 901 501 100 301 200 103 202 101 102 400 104 205 0402 502 05: : : : : : : : : : : : :*1 ® [730] Outgoing Message (OGM) Floating Extension NumberDISA Security Mode and Available FeaturesIf the DISA AA service is not employed, the caller may access the PBX features by entering the featurenumbers. To prevent others from accessing the PBX features, it is possible to assign DISA security.→ [732] DISA Security ModeThe features available depend on the preprogrammed DISA security mode as follows:168 Feature Guide1.17.6 Direct Inward System Access (DISA)
