Additional Information, 6Modem Sharing | Compaq 281862-002 specification

8-6Modem Sharing

Additional Information

Determining Proper Initialization Strings in a

Windows NT 4.0 RAS Environment

Each modem supported under Windows NT is uniquely described by an entry in a modem information file (*.INF). This file, which is either provided by Microsoft as part of the Windows NT installation or provided by the modem vendor, contains specific configuration information necessary for Windows NT applications to fully utilize the modem. Consequently, a given application may send out completely different and mutually incompatible initialization strings, depending upon which modem is configured.

Since modems can be configured to operate in any number of modes, it is important to ensure that IRC has programmed the modem in such as way that a forwarded call makes sense to the operating system. For example, Windows NT may expect numeric response codes from modem A, and verbose response codes from modem B.

Determining exactly how Windows NT has configured the modem is difficult, since the exact modem initialization strings are abstracted by the operating system.

Configuration strings which allow the modem to be used both by IRC and Windows Remote Access Server (RAS) for Windows NT 4.0 are shown in Table A-2 in Appendix A. If your modem does not appear in this table, the following procedure can be used to determine the proper initialization strings for your modem.

NOTE: This is an advanced procedure that assumes familiarity with Windows NT and Hayes AT command strings. Obtain a complete listing of the AT command reference for your modem from your modem manufacturer before proceeding. This procedure assumes that Windows Remote Access Server (RAS) is configured, installed, working, and completely tested with IRC disabled.

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Compaq 281862-002 manual Additional Information, 6Modem Sharing

Contents

Integrated Remote Console Compaq Integrated Remote Console User Guide Contents Establishing a Connection Using Attention Key Sequences Appendix B Vii Text Conventions Viii About This Guide Symbols in TextGetting Help Compaq Website Telephone Numbers Integrated Remote Console Capabilities Introduction 2Introduction Benefits of Using Integrated Remote ConsoleRequirements Installation Sequence Outline 4Introduction TerminologyIRC Terminology Expected Audience Accessing Integrated Remote Console Installing the Modem Setup and Configuration 2Setup and Configuration Configuring the ModemConfiguring a non plug-n-play ISA Modem Select View or Edit Details 4Setup and Configuration Configuring an external modem or direct connection Example Configuring an integrated serial port 6Setup and Configuration Configuring Integrated Remote ConsoleIntegrated Remote Console Configuration Summary Integrated Remote Console Configuration Summary Internal Modem External Modem or 8Setup and Configuration Modem Strings Assigning Authorized Users 10Setup and Configuration Example Selecting a user to modify User Configuration 12Setup and Configuration Example Edit User screen Example Setting Security Access 14Setup and Configuration Establishing a Connection Establishing a Connection Using Compaq Insight Manager 2Establishing a Connection Device Setup window 4Establishing a Connection Establishing an Out-of-Band Remote Console Connection Invoke Integrated Remote Console Login 6Establishing a Connection Verifying Modem Settings COM port settings 8Establishing a Connection Establishing a Connection Using Windows HyperTerminal Compaq Integrated Remote Console User Guide 10Establishing a Connection Setting up a Connection HyperTerminal is now ready to dial into the managed server Connection window 12Establishing a Connection Establish a connection using HyperTerminal 14Establishing a Connection Saving a Connection Terminal settings Configuration GuidelinesDisplay Settings 16Establishing a Connection Modem settingsLimitations Establishing a Connection Invoke IRC Login 18Establishing a Connection Login Remote Console Main Menu 20Establishing a Connection 10. Remote Console mode Using Integrated Remote Console Remote Console mode 2Using Integrated Remote Console Main Menu Options Remote Console Menu Option 4Using Integrated Remote Console Beginning a Remote Console Session Using Remote Console mode Key Functions for Navigating the IRC Menu System 6Using Integrated Remote Console Compaq Integrated Remote Console User Guide Returning to the Main Menu 8Using Integrated Remote Console Changing the Default Attention Key Changing the Terminal Screen Size 10Using Integrated Remote Console Return to Main Menu 12Using Integrated Remote Console Reboot Server Menu Option Server Reboot menu Reboot Server warning 14Using Integrated Remote Console 10. Power Cycle warning 12. Power Cycle using Ansi terminal emulation emulation 16Using Integrated Remote Console View Reboot Sequence 13. Reboot Replay Sequence screen 18Using Integrated Remote Console 14. Event Log screen View Event Log 20Using Integrated Remote Console Change Password 16. Manage Login Information screen Manage Login Information Modify User Information 22Using Integrated Remote Console 18. Manage Configuration screen Manage Configuration 24Using Integrated Remote Console Communications Setup 20. Edit Modem Strings screen Modem Strings 26Using Integrated Remote Console Disconnecting Using Attention Key Sequences Example Returning to IRC Main Menu 2Using Attention Key Sequences Compaq Integrated Remote Console User Guide Example Pressing F10 Key 4Using Attention Key Sequences Key Function Atn a Example Entering Alt + P 6Using Attention Key Sequences Example Entering Ctrl + Alt + Del More Attention Key Examples 8Using Attention Key Sequences Example United States Keyboard with Attention Keys indicated Changing the Attention Key Modem Requirements Additional Modem InformationModem Types 2Additional Modem Information External Serial ModemsImportant Tip Windows Modems Internal ISA Plug-n-Play Modems 4Additional Modem Information PCI-based Modems Modem Configuration Setting Summary Modem Configuration Strings 6Additional Modem Information Computer to Modem Serial Port SpeedData Carrier Detect DCD Operation Flow Control Error CorrectionData Terminal Ready DTR Interpretation 8Additional Modem Information Data CompressionResponse Codes Direct Connections Connecting Using a Terminal or Terminal Emulator 2Direct Connections Cable RequirementCommunication Requirements Compaq Integrated Remote Console User Guide 4Direct Connections Connecting Using a Terminal Server or Concentrator Obtaining the Appropriate Cable 6Direct Connections Example Cisco 2509/2511 RJ-45 Connector Pinout Connector Example 8Direct Connections Configuring Integrated Remote ConsoleExample Cisco 2509/2511 RJ-45 to DB-9F Adapter Configuring the Terminal Server 10Direct Connections Modem Sharing 2Modem Sharing Asynchronous Management Compaq Integrated Remote Console User Guide 4Modem Sharing Graphical Remote Control Compaq Integrated Remote Console User Guide 6Modem Sharing Additional Information View Modem Log File Temporarily disable IRCTurn on Modem Log File 8Modem Sharing Locate the Modem Initialization Strings Re-enable IRC with Proper Initialization Strings Modem Selected Baud Init String #1 Init String #2 Suggested Modem Settings Dedicated or Shared in non-NT Environment Modem Settings 2Suggested Modem Settings Suggested Settings When Modem is Shared in Windows NT Shared in NT 4.0 Environment Modem Settings 4Suggested Modem Settings Terminal or PC Modem Null-Modem Cable Description Table C-1 Error Table of Contents Troubleshooting 2Troubleshooting Post Errors Connection problems using a modem in dedicated mode Connection Problems 4Troubleshooting Cannot obtain a login prompt in dedicated mode Compaq Integrated Remote Console User Guide 6Troubleshooting Connection problems using a modem in shared mode Cannot obtain a login prompt in shared mode 8Troubleshooting Compaq Integrated Remote Console User Guide 10Troubleshooting Connection problems using a direct- connectionCannot obtain a login prompt using a direct-connection Terminal doesn’t scroll correctly in Remote Console Mode Problems while using IRC 12Troubleshooting View Reboot Sequence is grayed out Index-1 Index Index-2 Index-3 DCD Index-4 Index-5 Index-6 Index-7 Index-8 Index-9 Index-10 Index-11 Index-12