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Direct Inward System Access (DISA)
To place an intercom call:
1. Dial [3].
2. Dial the Station Number
To disconnect a CO line DISA call:
1. Dial [0] + [#].
To extend the DISA talk (conversation) time:
1. When the DISA call is in progress, Dial [0] + [✳] to extend the preset conversation
time.
Conditions
Two DISA CO lines may be used simultaneously. If more than two DISA CO lines are
signaling for answer, the subsequent calls will receive an internal busy tone.
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 a station number which is non-existent, your call will be directly transferred
to the attendant.
The CO Line-to-CO line conference time is programmable for 1, 2, 3, 5, 10, and 15
minutes (default is one minute). The CO line-to-CO line conference time may be set to
automatically drop the connected outside parties upon expiration of a pre-
programmed time.
If you do not dial the station number within the 10-second time-out period, your call will
be transferred to the attendant station.
A programmed Talk Time will disconnect all DISA-CO Line calls when it expires.
The default COS of day and night for DISA CO lines is 0. Each DISA CO line has its own COS
for dialing privileges.
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