7.3 [5-3-1] Voice Message—DISA System
Direct Inward System Access (DISA) enables outside callers to access specific PBX features as if the caller
were using an SLT extension of the PBX.
For more information on DISA, see "1.17.6 Direct Inward System Access (DISA)" in the Feature Guide.
Option 1

DISA Security—DISA Security Mode

Selects the DISA security mode to prevent unauthorised access to the PBX. In Trunk or All Security mode, the
caller is required to override security by Walking COS or Verification Code Entry in order to enable the restricted
feature temporarily.
Value Range
None: Intercom calls, TIE line calls, and trunk calls can be made.
Trunk: Intercom calls and TIE line calls without PBX code can be made. TIE line calls with PBX code and trunk
calls are restricted.
All: All calls are restricted.
Maintenance Console Location
7.3 [5-3-1] Voice Message—DISA System
Programming Manual References
None
Feature Guide References
1.9.5 Walking COS
1.9.6 Verification Code Entry

DISA Security—Remote Walking COS through DISA without PIN (Optional SD

Card Required)

Enables registered caller ID numbers to be automatically recognised as PBX extensions when calling through
DISA, and to use the Walking COS features without entering a PIN.
Value Range
Disable, Enable (Get DISA)
Maintenance Console Location
7.3 [5-3-1] Voice Message—DISA System
Programming Manual References
None
746 PC Programming Manual
7.3 [5-3-1] Voice Message—DISA System