1.2 Making Calls
40
User Manual
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 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 OGM.
The caller may also be able to access system
features or call an outside party by using the
caller's password (Direct Inward System Access
[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.