2.16 Direct Inward System Access (DISA) Features
2.16.1 Direct Inward System Access (DISA)
Description
An
outside caller can access specific PBX features as if the caller is an SLT extension user in the PBX, when
the incoming call destination is a DISA floating extension number assigned to each DISA message. The caller
can have direct access to features such as:
• Placing an intercom call to an extension, operator or any floating extensions (e.g., an external pager for
TAFAS).
• Calling an outside party via the PBX.
• Operating some PBX remote features (e.g., FWD)
DISA Intercept Routing—No Dial
If the caller fails to dial any digits within a preprogrammed time period (DISA 1st Dial Time for Intercept) after
hearing the outgoing message (OGM), one of the following can be selected through system programming:
a. Disable: The call will be terminated.
b. Operator: The call will be redirected to the operator.
c. AA-0, AA-9: The call will be redirected to the destination assigned to that AA number.
→ 10.3 PBX Configuration—[2-3] System—Timers & Counters—DISA / Door / Reminder / U. Conf—
DISA—No Dial Intercept Timer (s)
→ 13.3.1
PBX Configuration—[5-3-1] Optional Device—Voice Message—DISA System—Option 1—
DISA
Intercept—Intercept when No Dial after DISA answers
DISA Built-in Automated Attendant Number (DISA AA Service)
After listening to the outgoing message
(OGM), the caller may dial a single digit (DISA AA number). The
destination for each DISA AA number can be assigned for each message. It is also possible to assign other
DISA floating extension numbers as the destination (Multistep DISA AA Service).
If the caller dials a second digit within a preprogrammed time period (DISA 2nd Dial Time for AA), the DISA
AA service is not employed.
→ 13.3.2 PBX Configuration—[5-3-2] Optional Device—Voice Message—DISA Message—
1 Digit AA
Destination (Extension Number)
—Dial 0–9
→ 10.3 PBX Configuration—[2-3] System—Timers & Counters—DISA / Door / Reminder / U. Conf—
DISA—2nd Dial Timer for AA (s)
Outgoing Message (OGM)
When a call arrives on a DISA line, a prerecorded DISA message will greet and guide the caller.
Any extension assigned as the manager can record outgoing messages
(OGMs). (® 2.30.2 Outgoing
Message (OGM))
[Programming Example]
Outgoing
Message
(OGM) No.
Floating
Extn. No.
*1
Automated Attendant No.
*2
Busy/DND
Message
No.
*3
0 1 2 3 4 5 6 7 8 9
01 501 100 301 200 103 202 101 102 400 104 205 04
02 502 05
: : : : : : : : : : : : :
*1
® 13.3.2 PBX Configuration—[5-3-2] Optional Device
—Voice Message—DISA Message—
Floating Extension Number
The default floating extension number depends on the value specified for Numbering Plan in Easy Setup.
Feature Guide 207
2.16.1 Direct Inward System Access (DISA)
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