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Samsung System Administration Guide
DCS-408 & 408i November 2001
5
OR
Dial any extension number to call a station in the system. (To make another in-
ternal call when the current call is completed, press
✼
✼✼
✼
, receive dial tone and dial
another extension number.)
5. Press # and hang up when finished.
Note:
• Outgoing DISA calls are controlled by the dialling class of the station identified by the secu-
rity code. The DISA line must have disconnect supervision from the central office. Insist that
this condition be verified by your system installer.
•
See your Samsung DCS Keyset User Guide for how to change keyset passcodes.
DISA Security
A common practice among hackers is to repeatedly dial a known DISA access number
(usually with a computer) and try a different passcode each time. The hacker hopes to
eventually chance upon the correct passcode and thus gain access to your system.
The system’s security feature will count the number of sequential incorrect passcode
attempts, and if a certain number is reached, DISA will be disabled and the system will
alert designated stations. The number of attempts allowed and the time for which DISA
calls are disabled are both programmable. In addition, the DCS system will print a Sta-
tion Message Detail Recording (SMDR) report each time an incorrect passcode is en-
tered (provided, of course, you have an SMDR printer installed on your system).
To clear the DISA alarm:
1. Lift the handset and dial the access code 58.
2. Enter the DISA alarm passcode (‘5678’ by default—refer to MMC 202).
3. Replace the handset.
WARNING
As it is impossible to prevent unauthorised access to your telephone system by hack-
ers, we suggest that you do not turn the DISA feature on unless you intend to use it. If
you do use this feature, it is good practice to frequently change access passcodes and
periodically review your telephone records for unauthorised use.
Account Codes
Account codes are used to charge an outside call from a station to a specific account.
These account codes can be either forced or optional. If forced, they are always veri-
fied from a system list of up to 100 entries and a message is displayed at a station that
the code must be entered before a call can be made. You must have an ACCT key
programmed on each keyset which requires this option.
Using Account Codes
1. Lift the handset and press the ACCT key or dial 47.
2. Enter the account code.
3. Press the ACCT key again, then press TRSF. If a correct code is entered, you will
hear dial tone and you can make an outside call in the usual manner. If an incorrect
code is entered, the station returns error tone.