HYBREX G1 8-24, Manual

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Direct Inward System Access (DISA)
Description
DISA provides outside callers with the ability to directly dial extensions within the telephone system or
access specialized telephone lines and make outgoing calls without attendant intervention. Maintenance
personnel may use the DISA feature to make program changes from a remote location such as their
service center. DISA callers may access speed dial, "dial 9" Trunk groups, individual Trunk, system
operator and may also invoke the monitor feature for specific stations or either of the two door phones.
There are a number of timers associated with DISA to provide the most effective service for calling
parties.
DISA calls to internal stations are programmable for full supervision during every phase of the call. If an
inbound DISA caller fails to dial any digits, insufficient digits or invalid digits, the caller will be routed to an
Attendant Operator. Once the digits are verified to be a valid station number, the call proceeds to the
station. At this point, there is an option to forward the call to the operator if the station is busy, does not
answer, if the station is either busy or doesn't answer, or to not forward to the operator at all. This
function is controlled by Mode 46-STN-04 (DISA Recall Capability to Operator), as described below. If
the dialed station is programmed to recall to the operator, the software will activate both a counter and
timer as defined in Mode 05-08-06 (DISA No Answer Recall Timer). If no recall to the operator is set, the
call will queue for the period of time as defined for this timer, and will cycle through the counter as
depicted in the DISA flow chart in Appendix A of this document.
Conditions
In order to use DISA, the outside party must be calling from a DTMF telephone.
DISA must be active on the G1-824 digital Telephone System.
When using DISA to access another outside, call duration is limited to six (6) minutes. Warning tone will
notify user of timeout ten seconds prior to system disconnect. User can press a numeric (0-9) DTMF digit
to extend the timer in six minute increments or do nothing and allow system disconnect. DISA calls made
to internal stations are not limited in duration.
Dialing [*] at any point in the DISA call causes immediate disconnect.
DISA and External Call Forwarding on a Trunk are mutually exclusive.
If DISA callers fail to enter any digits, they will be transferred to the operator after 15 seconds.
If a DISA caller dials insufficient digits the call will be transferred to the operator 7 seconds after the last
entered digit.
Programming
Mode 35-[TK]-04 Trunk Specifications. DISA must be enabled during the time period to be utilized. DISA
may be enabled during day service only, night service only, both day and night service, or DISA may be
disabled at all times. The table below shows the valid settings and the resulting status for the Trunk:
35-[TK]-04 Day Status Night Status
0 Disabled Disabled
1 Disabled DISA Enabled
2 DISA Enabled Disabled
3 DISA Enabled DISA Enabled
4 Disable ECF Enabled
5 ECF Enabled Disabled
6 ECF Enabled ECF Enabled
7 DISA Enabled ECF Enabled
8 ECF Enabled DISA Enabled