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3.2 System Programming (Manager Programming)
Operating Manual 165
[530] DISA Security Code Digits
You can select the number of digits used for DISA security codes assigned in [512] DISA Security Code.
Entering Characters
You can enter the following characters. The tables below show you the characters available for each button.
Table 1 (Alphabet mode)/Table 2 (Numeral mode)
• WARNING
There is a risk that fraudulent telephone calls will be made using the Outside-to-
Outside (CO-to-CO) Line Call feature of DISA.
The cost of such calls will be billed to the owner/renter of the PBX.
To protect the PBX from this kind of fraudulent use, we strongly recommend:
a) Enabling DISA security (Trunk Security or All Security).
b) Keeping DISA security codes secret.
c) Selecting complex, random codes that cannot be easily guessed.
d) Changing codes regularly.
• Security code numbers (not security codes) are logged by Station Message Detail
Recording (SMDR).
• The number of digits required for DISA security codes can be assigned in [530] DISA
Security Code Digits.
• When this setting is changed, all assigned DISA security codes are cleared.
STORE
Press NEXT.Enter 512. Press STORE. Press END.Enter security code
(4–10 digits).
security code
Press NEXT.
Press PREV.
To continue
To end
5 1 2
Enter code
number (1–4).
code no.
NEXT
END
OR
NEXT PREV
Press SELECT.
SELECT
Press NEXT.Enter 530.
5 3 0
NEXT
Press SELECT
(4–10 digits).
SELECT
To end
Press STORE.
STORE
Press END.
END