Direct Inward System Access (Disa) - NEC Electra Elite IPK II System User Manual

Electra Elite IPK II
Description
DISA permits outside callers to directly dial system extensions, trunks and selected features. This could
help an employee away from the office that wants to directly dial co-workers or use the company's trunks
for long distance calls. To use DISA, the employee:
Dials the telephone number that rings the DISA trunk

Waits for the DISA trunk to automatically answer with a unique dial tone

Dials the 6-digit DISA password (access code)

Waits for a second unique dial tone

Accesses a system trunk, uses a selected feature or dials a system extension

DISA calls ring system extensions like other outside calls. If an extension has a line key for the DISA
trunk, the call rings that key. If the extension does not have a line key, the extension must have a Call
Appearance (CAP) key to answer the call.
You can set DISA operation differently for each Night Service mode. For example, a trunk can be a
normal trunk during the day and a DISA trunk at night. You can also set the routing for DISA trunks when
the caller dials a busy or unanswered extension, dials incorrectly or forgets to dial.
DISA allows 15 users, 15 DISA Classes of Service and 200 trunks.
DISA Class of Service
DISA Class of Service provides features and dialing restrictions for DISA callers. This allows you to
control the abilities of the DISA callers dialing into your system. When a DISA caller first accesses the
system, they can be prompted to enter a DISA password before proceeding. The system associates the
password entered with a specific user number, which in turn has a Class of Service. If the Class of
Service allows the action (such as making outgoing trunk calls), the call goes through. If the DISA Class
of Service does not allow the action, the system prevents the call. The DISA Class of Service options
are:
Trunk Group Routing/ARS Access

When a DISA caller dials into the system, they can dial 9 and place outside calls. Any toll charge is
incurred by the system. The call follows the system Trunk Group Access or Automatic Route
Selection – whichever is enabled.

Direct Inward System Access (DISA)

Direct Inward System Access (DISA)
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