Disa Security; Direct Inward System Access - Samsung DS24D User Instruction

• Dial an access code and then the telephone number—OR—use the
desired feature as usual.
• Hang up. The station will be returned to its restricted status.
NOTE: The default station passcode 1234 cannot be used.
IN/OUT OF GROUP
Any station assigned to a station group can remove itself from that group
and then reenter the group at a later time. When out of the group, a station
can receive calls to its extension number but not to the group. There are 10
groups and the access codes are 500–509.
To create a backup or relief operator position, assign the main operator and
one or more backup individuals to the operator group. All but the main op-
erator should be out of the group. When it is necessary to use a backup
operator, put the desired backup station in the group and remove the main
operator. When incoming call traffic is heavy, you can have another station
put itself in the operator group along with the main operator to handle the
extra call load.
If the station does not have an IN/OUT key:
• Lift the handset and dial 53.
• Dial the group number.
• Dial 0 to be out of the group or dial 1 to be in the group.
• Receive confirmation tone and hang up.
If the station has an IN/OUT key:
• Press the IN/OUT key. It will light red when the station is in the group.
• Press the IN/OUT key again. The light is off when the station is out of
the group.
NOTE: A station can be in more than one group.

DIRECT INWARD SYSTEM ACCESS

(DISA)
From outside of the office, selected individuals can call into the DS 616 sys-
tem on special DISA line(s). A security code must be entered to gain access.
Once these individuals are in the system, they can make outside calls using
the office lines, call stations within the system, access paging resources, or
set/reset their external forward database.
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DISA allows the use of an incoming line to gain access to system resources
for the purpose of dialing an intercom, accessing a Central Office (C.O.) line,
internal paging or changing external forward setting.
Individuals who will use DISA must have their stations assigned for DISA ac-
cess and must change their station passcodes. The default passcode 1234
cannot be used.
• Call in on the DISA line from any phone with tone dialing.
• You will hear a dial tone. Dial your security code (your extension num-
ber plus your station passcode). If you want to connect to a station,
you do not need a passcode; security codes are needed only for
access to trunk lines.
• If you are allowed access, you will receive system dial tone.
• Dial any line access code, receive outside dial tone and then dial a
telephone number OR dial any extension number to call a station in
the system.
• To make another call, press , receive dial tone and dial another num-
ber.
• Press # and hang up when finished.
NOTE: Outgoing DISA calls are controlled by the dialing class of the station
identified by the security code. The DISA line must have disconnect supervi-
sion from the central office. Insist that this service is verified by your installa-
tion/service company.

DISA SECURITY

A common practice among "hackers" is to repeatedly dial a known DISA ac-
cess 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 SAMSUNG DS 616 security feature
counts the number of sequential incorrect passcode attempts. If a certain
number is reached, DISA is disabled and the system sends an alarm to des-
ignated display stations. The number of passcode attempts and the disable
duration are both programmable. In addition, the SAMSUNG DS 616 system
will print an SMDR record (a customer-provided printer and a serial interface
module—SIM are required) each time an incorrect passcode is entered.
The DISA alarm will ring for a programmable time before canceling the ring-
ing; however, the DISA alarm display will remain until the alarm is cleared. To
clear the DISA alarm, follow the following procedure:
System Admin
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