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1.2 Making Calls
User Manual 41
1.2.7 Accessing Another Party Directly from Outside (Direct
Inward System Access [DISA])
To call an extension
When an outside caller dials a specified telephone
number of the PBX, a prerecorded Direct Inward
System Access (DISA) outgoing message (OGM)
can greet the caller and give information about how
to access an extension. The operator does not
need to be involved. If there is no recorded
message, the caller will hear a short beep instead
of the DISA OGM.
The caller may also be able to access system
features or call an outside party by using the
caller's password (DISA security code), depending
on the security mode. Ask your manager about the
mode assigned to your PBX.
Call
Outside party
DISA OGM
Supported destinations
Dial DISA
phone number.
DISA
phone no.
From an Outside Telephone
In No Security Mode/Trunk Security Mode
Off-hook.
Dial DISA
phone number.
DISA
phone no.
In All Security Mode
Off-hook.
Enter
.
Enter
DISA security code
(4
–
10 digits).
Dial desired
extension number.
desired
extension no.
Dial desired
extension number.
desired
extension no.
R.B.Tone &
DISA OGM
(or one short beep)
R.B.Tone
R.B.Tone &
DISA OGM
(or one short beep)
One short beep
You can dial the preprogrammed
AA number instead.
DISA security code
R.B.Tone
You can dial the preprogrammed
AA number instead.