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2.2 Making Calls
Operation 51
2.2.8 To Access Another Party Directly from Outside (Direct
Inward System Access [DISA])
WARNING
When you enable the Outside-Outside Line Call feature of DISA function, if a third party discovers the
password (a DISA User Code) of the system, you have a risk that they will make illegal phone calls
using your telephone line, and the cost may be charged to your account.
To prevent this problem from occurring, we strongly recommend the following points:
1: Carefully maintain the secrecy of the password.
2: Specify a complicated password with several digits.
3: Change the password frequently (at least once per month).
This feature is possible if an optional card KX-
TD61291 is installed in the main unit. This feature
allows an outside caller to access specific system
features as if the caller is an extension in the
system. The caller can have direct access to
feature such as:
• Placing an incoming call to an extension or
operator. The caller also has the option of
dialling the route for an extension using 1
digit number (DISA Automated Attendant
(AA) number) via DISA calls.
• Calling an external party.
An outgoing message greets the caller and gives
information about how to access an extension. You
do not need the operator's assistance.
You may not be able to access the features without
a DISA user code depending on the security mode.
Non Security Mode: Any caller can make outside
or intercom calls.
Trunk Security Mode (Default): A pre-assigned
DISA security code must be entered to make
outside calls.
All Security Mode: A pre-assigned DISA security
code must be entered to make both outside and
intercom calls.
This prevents the caller from making unauthorised
calls. However, when making an outside call by
Call Forwarding – to Outside (CO) Line, the call is
allowed (exception). Ask your manager for the
mode assigned to your system.
• An optional voice message card KX-TD 61291 is required to enable DISA function.
• This feature is available only for DTMF (Touch Tone) telephone user.