Programming instructions

BASIC CALL HANDLING PROGRAMMING TASKS DX-120 Programming Manual
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Setting Direct Inward System Access (DISA)
This feature allows you to remotely access system resources such as system speed dial, CO line access, and intercom
dialing.
IMPORTANT!
The optional AAM board is required for DISA.
• You can assign any number of DISA lines as incoming DISA access based on the system service mode (day,
evening).
• You can access DISA using the Automated Attendant or by using dedicated DISA lines.
• The system secures access to DX-120 system resources for out-calling by means of verified passwords against
the assigned extension number. Users can use system resources only after they enter a valid extension number,
and enter a valid password for that extension.
• Related features that may affect DISA include the following.
- Auto Attendant
- System Speed Dial
• The following conditions apply to the DISA feature.
- Four DISA CO lines can be used simultaneously. If more than four DISA CO lines are signaling for answer,
the system plays an internal busy tone for subsequent calls.
- While DISA-to-CO calls are in use, DTMF receivers on the AAM are dedicated to the function. Therefore, the
quantity of the four DTMF resources are reduced by one for each DISA-to-CO call in progress. This affects
Automated Attendant operation since DTMF receivers are required to collect digits from outside callers.
- The default class of service of day and night for DISA CO lines is 0. Each DISA CO line has its own class of
service for dialing privileges.
- DISA CO line class of service assignment coincides with toll restriction COS tables.
- The activation time for a DISA CO line is programmable for “never”, “day”, “night”, or “always”.
- If you dial an extension number which is non-existent, the system directly transfers your call to the attendant.
- The DISA talk time is programmable for 1, 2, 3, 5, 10, and 15 minutes (default is 5 minutes). The DISA talk
time is set to automatically drop the connected outside parties upon expiration of the preprogrammed time. A
warning tone is heard 10 seconds prior to the disconnect operation.
- You can extend the DISA talk time while connected to a DISA call. To extend the talk time, dial 0 * (this
restarts the DISA talk timer).
- To disconnect a call originated via DISA (before the talk time expires), dial 0 #.
Setting DISA (continued on next page)