Multitech MT5634ZBA-V-V92, MT5634ZBA-GLOBAL Callback Security, Changing the Setup Password

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Chapter 6 – Callback Security

Chapter 6 – Callback Security

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

1.Open a data communications program such as HyperTerminal or PhoneTools.

2.In the terminal window, type AT#SMTSMODEM (or AT#Sxxxxxxxx if you have replaced the MTSMODEM password with xxxxxxxx). Press ENTER. The modem responds with OK if the setup password is correct and ERROR if it is wrong.

3.To change the password, type AT#S=xxxxxxxx, where xxxxxxxx stands for the new password, and then press ENTER. The password can include any keyboard character, and can be up to eight characters long. The modem responds with OK.

4.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.

CAUTION: Passwords are case-sensitive. The next time you enter the password, it must be in the same case as you set it up.

Turning Callback Security On and Off

Callback security must be turned on to enter many callback security commands.

1.Open a data communications program such as HyperTerminal or PhoneTools.

2.In the terminal window, type AT#Sxxxxxxxx, where xxxxxxxx is your password. Press ENTER. The modem responds with OK if the setup password is correct and ERROR if it is wrong.

3.Type one of the following commands:

•To turn off callback security: Type AT#CBS0 and press ENTER. Callers no longer need a password to 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: Type AT#CBS1. Press ENTER. With local 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: Type AT#CBS2 and press ENTER. With remote callback 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): Type AT#CBS3 and press ENTER. The modem returns to its original setting when you issue the hangup command (+++ATH) or the modem is reset. Note that if a remote modem breaks the connection, callback security remains disabled.

Multi-Tech Systems, Inc. MT5634ZBA-Series User Guide (S000286G)

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Contents MultiModem ZBA MultiModem ZBA MT5634ZBA-Series User Guide Table of Contents Table of Contents Introduction Features TableFeatures Specific to Opening the Modem InstallationSafety Warnings Change the Internal JumpersChanging the Voice Jumper Global Connections Connect the Modem to Your PCNon-Global Connection Connect the Modem to Your PC Connect the Two-Wire Leased Line Leased Line OnlyConnect the Modem to the AC Power Outlet Power-On TestInstalling the Modem Driver Install the Modem DriverUsing AT Commands to Configure Your Modem Using the Global Wizard to Configure Your ModemModem Serial Speed Guidelines Configure the modem for best performanceAbout the Front Panel OperationLeased-Line Operation SetupOperation Connecting to the Internet AT Commands, S- Registers, and Result Codes Changing the Setup Password Remote ConfigurationBasic Procedure SetupCallback Security Changing the Setup PasswordTurning Callback Security On and Off Password-Only Callback Setting Callback Security Message ParityAssigning Callback Passwords and Phone Numbers Calling ProceduresExtension-Entry Callback Number-Entry CallbackDirect Connection Callback Security CommandsCallback Assignments Form None of the Indicators Light TroubleshootingModem Does Not Respond to Commands Page Page Fax and Data Software Can’t Run at the Same Time Data Is Being LostThere Are Garbage Characters on the Monitor Modem Doesn’t Work with Caller IDFax Data Rates Appendix a Technical SpecificationsReceiver Sensitivity Identify the Current Firmware Version Upgrade OverviewAppendix B Upgrading the Modem’s Firmware Identify the Modem FirmwareRestore Your Parameters Download the Upgrade FileExtract the Upgrade Files Upgrade the Modem’s FirmwareFCC Part 15 Regulation Appendix C Regulatory ComplianceFCC Part 68 Telecom International Modem Restrictions EMC, Safety and R&TTE Directive ComplianceCanadian Limitations Notice Industry CanadaSouth African Statement New Zealand Telecom Warning NoticeWeee Waste Electrical and Electronic Equipment Statement Appendix D Waste Electrical and Electronic EquipmentSetup Appendix E Installing a Modem under LinuxConnecting to a Cisco Router Console Port Appendix F Connecting to a Cisco RouterConsole Port Connections Remote ConfigurationAppendix G Rohs HT/TS Substance Concentration Caller ID IndexIndex

MT5634ZBA-GLOBAL, MT5634ZBA-V-V92, MT5634ZBA-SERIES, MT5634ZBA specifications

The Multitech MT5634ZBA series is a line of high-performance 56K modems that have been engineered for reliable data transmission over telephone lines. This series includes models such as the MT5634ZBA, MT5634ZBA-SERIES, MT5634ZBA-V-V92, and MT5634ZBA-GLOBAL, each catering to different communication needs while maintaining a commitment to quality and efficiency.

One of the standout features of the MT5634ZBA series is its support for the V.92 protocol. This technology significantly enhances the modem's performance by allowing faster upload speeds compared to its predecessors. With V.92, users can enjoy uploads at speeds up to 48Kbps, which is particularly beneficial for those who frequently send large files or engage in video conferencing. Furthermore, the V.92 protocol supports features like modem-on-hold, enabling users to receive incoming calls without disconnecting their internet session.

Another notable characteristic of the MT5634ZBA series is its globally compatible design. The MT5634ZBA-GLOBAL version has been adapted to work with various international telecommunications standards, making it an excellent choice for businesses and individuals who require a reliable connection across different countries. This international usability ensures that users can connect seamlessly, regardless of location.

The MT5634ZBA modems also feature advanced error correction and data compression technologies, such as MNP2-4 error control, and V.42 bis compression. These technologies work together to improve data integrity and enhance the overall throughput of the modem, resulting in a more efficient and reliable connection.

In terms of hardware, the MT5634ZBA series modems are built with robust components that ensure longevity and consistent performance. They are equipped with standard serial interface ports that allow easy integration with various devices, such as computers, point-of-sale systems, and other communication equipment.

In summary, the Multitech MT5634ZBA series represents a significant advancement in modem technology, combining speed, reliability, and global adaptability. With its support for V.92, comprehensive error correction, and high-level data handling capabilities, the MT5634ZBA series is an ideal choice for users seeking efficient and effective communication solutions, whether at home or in business environments.
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