3.1.4  DISA (Direct Inward System Access)
Description
A caller can access specific PBX features as if the caller is an SLT extension user in the PBX when the
incoming call destination is a DISA floating extension number assigned to each DISA message. The caller
can have direct access to features such as:
• Placing an intercom call to an extension or any floating extensions (e.g., Extension group)
• Calling an outside party via the PBX.
• Operating some PBX remote features (e.g., FWD)
• End of call detection
For the function flow regarding incoming calls to DISA, see [Flow Chart].
3.1.4 DISA (Direct Inward System Access)
Feature Manual 25