Direct Inward System Access (Disa) - Tadiran Telecom Emerald ICE Installation & Maintenance Manual

7.12
7-40
Emerald ICE Installation, Programming & Maintenance Manual

Direct Inward System Access (DISA)

DISA is available only with the the installation of a 4VAA Automated
Attendant Card in the KSU.
Description
This feature allows you to remotely access system resources such as System Speed
Dial, CO Line Access, and Intercom dialing.
Any number of DISA lines may be assigned as incoming DISA access based on the
system service mode (Day, Evening).
DISA can be accessed via the Automated Attendant as well as by dedicated DISA
lines.
Access to Emerald ICE system resources for out‐calling is secured by means of
verified passwords against the assigned extension number. Use of system
resources is accomplished only when a valid extension number has been entered
and when the password entered matches that stored for the extension number
entered.
Four DISA CO lines may be used simultaneously. If more than four DISA CO lines
are signaling for answer, the subsequent calls will receive an internal busy tone.
While DISA‐to‐CO calls are in use, DTMF receivers on the 4VAA card are
dedicated to the function. Therefore the quantity of DTMF resources (four), are
reduced (by one) for each DISA‐to‐CO call in progress. This affects the Automated
Attendant operation since DTMF receivers are required to collect digits from
outside callers.
The default Class of Service (COS) of day and night for DISA CO lines is 0. Each
DISA CO line has its own COS for dialing privileges.
DISA CO line COS 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, your call will be directly
transferred to the attendant.