NEC ELECTRA ELITE IPK II, Features And Specifications Manual

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Electra Elite IPK II Document Revision 1
Direct Inward System Access (DISA) 2 - 303
Direct Inward System Access (DISA)
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:
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Dials the telephone number that rings the DISA trunk
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Waits for the DISA trunk to automatically answer with a unique dial tone
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Dials the 6-digit DISA password (access code)
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Waits for a second unique dial tone
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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 capabilities 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:
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Trunk Group Routing/ARS Access
When a DISA caller dials into the system, they may be able to dial 9 and place outside calls. Any
toll charges are incurred by the system. The call follows the system’s Trunk Group Access or
Automatic Route Selection - whichever is enabled.
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Trunk Group Access
DISA callers may be able to access a specific trunk group for outgoing calls through the system. To
access a Trunk Group, the user dials Service Code 704 followed by the Trunk Group number