MT5634ZBA-GLOBAL Multi-Tech Systems, MT5634ZBA-GLOBAL Datasheet - Page 19

• Manufacturer Part Number: MT5634ZBA-GLOBAL
• Description: MODEM V.90 DATA/FAX GLOBAL
• Manufacturer: Multi-Tech Systems
• Series: MultiModem® ZBAr

Specifications of MT5634ZBA-GLOBAL

• Data Format: V.90
• Mounting Type: Desktop
• Package / Case: 5.7" L x 4.3" W x 1.0" H (145mm x 109mm x 25mm)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Supply: -
• Interface: -
• Other names: 881-1149; MT5634ZBA-GLOBAL

This chapter describes how to use callback security with your modem. Callback security protects your network from
unauthorized access and helps control long-distance costs. When callback security is enabled, all callers are requested
to enter a password. If a valid password is received, the modem hangs up and returns the call by dialing a phone number
that is stored with the password. The person being called back must then enter the password a second time to establish
a connection.
Up to 30 callback passwords and dialing strings can be stored in the modem. Each dialing string can be up to 34 or 35
characters long and can contain commands as well as phone numbers. For mobile callers, the dialing string can be
programmed to allow the caller to bypass the stored callback number by entering a temporary callback number, to enter
an extension at the callback number, or to make a direct connection without callback.
For local security, the passwords and dialing strings that are stored in the modem are protected from tampering by a
setup password, which you should change when you set up the modem. You can further protect the modem against
tampering by disabling its ability to respond to most AT commands. To check for attempted break-ins, you can request
the modem to display the number of failed password attempts.
Your modem was shipped with a default setup password (MTSMODEM). The same password is used for both callback
security and remote configuration (Chapter 5). Because anyone who has access to this guide has access to the default
password, you should change the password during your initial setup.
Changing the Setup Password
Turning Callback Security On and Off
Multi-Tech Systems, Inc. MT5634ZBA-Series User Guide (S000286G)
Chapter 6 – Callback Security
1.
2.
3.
4.
Callback security must be turned on to enter many callback security commands.
1.
2.
3.
CAUTION: Passwords are case-sensitive. The next time you enter the password, it must be in the same case as
you set it up.
Open a data communications program such as HyperTerminal or PhoneTools.
In the terminal window, type AT#SMTSMODEM (or AT#Sxxxxxxxx if you have replaced the MTSMODEM
password with xxxxxxxx). Press E
ERROR if it is wrong.
To change the password, type AT#S=xxxxxxxx, where xxxxxxxx stands for the new password, and then press
E
responds with OK.
The new password is saved automatically. You can now either enter more AT commands or exit HyperTerminal
or the data communications program. The next time you wish to set up the modem, you must use the new
password.
Open a data communications program such as HyperTerminal or PhoneTools.
In the terminal window, type AT#Sxxxxxxxx, where xxxxxxxx is your password. Press E
responds with OK if the setup password is correct and ERROR if it is wrong.
Type one of the following commands:
•
•
•
•
NTER
To turn off callback security:
connect to the modem, the modem is unable to call them back, and the stored dialing command locations
0–3 become available.
To turn on both local and remote callback security:
turned on, you must enter the setup password before you can enter any AT command except the AT, ATIn,
and AT#Sxxxxxxxx commands. For a description of remote callback security, see the following paragraph.
To turn on remote callback security only:
security turned on, each caller is asked to enter a password, is called back, and then is asked to enter the
password again before a connection can be made. Also, dialing command locations 0–3 for use with the
DS=y dialing command are replaced by callback dialing command locations 0–29.
To temporarily disable callback security if the modem is set to #CBS1 or #CBS2 (for instance, to call
another modem):
issue the hangup command (+++ATH) or the modem is reset. Note that if a remote modem breaks the
connection, callback security remains disabled.
. The password can include any keyboard character, and can be up to eight characters long. The modem
Type AT#CBS3 and press E
NTER
Type AT#CBS0 and press E
. The modem responds with OK if the setup password is correct and
Type AT#CBS2 and press E
NTER
. The modem returns to its original setting when you
Type AT#CBS1. Press E
NTER
. Callers no longer need a password to
NTER
Chapter 6 – Callback Security
. With remote callback
NTER
NTER
. With local security
. The modem
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