Specifications
Line Programming DXP Correspondence Manual
8.25
Direct
Inward
System Access
(DISA)
Through the DISA programming routines, you can configure a system
to allow outside callers to call directly into the system. DISA callers
can dial authorization codes that allow them to use the system’s
features that are normally available only to inside callers.
.
NOTE: It is possible to use the automatic route selection (ARS)
feature
(section 12)
along with the DISA
feature to route
DISA calls that pass through the system. If you enable this
application, you may need to add pauses in the ARS modify
digits table to account for the time delay the system
experiences in obtaining the CO dial tone. The amount of
time delay varies
for
each installation; therefore, you
must
test your installation to determine the time required to
obtain a CO dial tone when using the DISA feature. You
can then adjust the system timing pause time or add
multiple pauses to ofiset this delay.
DISA Specific Programming
The purpose of the DISA specific programming is to perform the
following tasks:
-
Enable extensions where day/night DISA calls will be routed
when call-routing is necessary,
-
Enable proprietary voice mail to receive DISA calls and route the
calls to a dedicated mailbox that holds the appropriate intercept
greetings,
-
Select access lockout time (the amount of time that the line
remains locked-out from use after invalid conditions occur-such
as, when a caller repeatedly dials an invalid authorization code),
-
Select the timeout period for DISA extensions that ring without
answer (RNA),
-
Select the maximum timeout period for the reminder tone that
sounds during an in-process call when the DISA caller is using an
outside line and the system has no disconnect supervision. This
tone sounds at set intervals to remind the caller that he or she must
dial a code (any single digit) or be disconnected within 10 seconds,
-
Select the option to either route a DISA call or drop it after caller
dials an invalid authorization code
8
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18 Line Programming