Contents:
      Connecting 
        to your ISP 
       Using 
        the AT Command Set 
      Upgrading your 
        Modem   
      Modes 
        of Operation 
      Dialing, 
        Answering, and Hanging Up 
      Working 
        with Memory 
      Controlling 
        Result Code Displays 
      Controlling 
        EIA-232 Signaling 
      Accessing 
        and Configuring the Courier 56K Corporate Modem Remotely 
      Controlling 
        Data Rates 
      Dial Security 
      Flow Control 
      Handshaking, 
        Error Control, Data Compression, and Throughput 
      Displaying Querying and Help Screens 
      Testing 
        the Connection 
      Dedicated/Lease 
        Line and Synchronous Applications 
      Troubleshooting 
      Appendixes
      S-Registers 
      Alphabetic Command 
        Summary  
      Flow Control 
        Template  
      Result Code 
        Meanings and Sets 
      Technical 
        Information 
      V.25 bis Reference 
      ASCII Chart 
      Fax Information 
        for Programmers 
      Viewing LEDs 
	  Regulatory 
        Information 
      Glossary 
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        Courier 56K Corporate Modem Command Reference
      Displaying Querying and Help screens
      This chapter contains information about: 
      
      Note: To view screen captures of 
        the help screens in the following chapter, refer to the Alphabetic Command 
        Summary appendix in this guide. 
      Overview
      The Courier 56K Corporate modem can display information such as the current 
        settings, product code, and call duration. 
      Common Inquiry Commands 
      
         
          |  
             For your modem to display 
           | 
           
             Command 
           | 
         
         
          | Current settings | 
           
             AT14 
           | 
         
         
          | NVRAM settings | 
           
             AT15 
           | 
         
         
          | Link diagnostics summary | 
           
             AT16 
           | 
         
       
       
       
      Querying
      Here is a complete list of ATIn commands. 
      
         
          |  
             For your modem to 
           | 
           
             Command 
           | 
         
         
          | Display a four-digit product code. | 
           
             ATI0 
           | 
         
         
          | 
             Perform a checksum of the modems read-only memory (ROM) and 
              display the results. (This function is used only in factory testing.) 
            The Courier 56K Corporate modem should always display the same number 
              unless the flash has been updated. 
           | 
           
             ATI1 
           | 
         
         
          | Perform a test of the modems random-access memory (RAM) and 
            display either OK (0) or ERROR (4), followed by OK when the test is 
            completed. You may want to use this command if the Courier 56K Corporate 
            modem appears to be malfunctioning. | 
           
             ATI2 
           | 
         
         
          | Display the Courier 56K Corporate modems banner, or product 
            title. | 
           
             ATI3 
           | 
         
         
          | Display the Courier 56K Corporate modems current configuration. | 
           
             ATI4 
           | 
         
         
          | Display the configuration saved in nonvolatile random access memory 
            (NVRAM). If your Courier 56K Corporate modem connects to a device that 
            has Dial Security and local access enabled, you cannot view the stored 
            phone numbers. | 
           
             ATI5 
           | 
         
         
          | 
             Display a diagnostic summary. During a connection, the Courier 56K Corporate modem monitors and stores information about link operations. 
              When the call is ended, you can request a diagnostic summary. 
            The duration of the last call or the real time is displayed, depending 
              on the modem clock setting. 
            For calls under data compression, the number of characters sent 
              may be less than the number of octets sent, due to data compression 
              operations. 
           | 
           
             ATI6 
           | 
         
         
          | Display the product configuration. | 
           
             ATI7 
           | 
         
         
          | Lists phone numbers with redial instructions. | 
           
             ATI8 
           | 
         
         
          | Displays modems Plug and Play ID.  | 
           
             ATI9 
           | 
         
         
          | Display the Dial Security Account Status. For security administrators 
            only, unless local security is disabled (S53=0 or S53.2=0) | 
           
             ATI10 
           | 
         
         
          | Display a connection report that USRobotics Technical Support 
            representatives use to help you solve problems. | 
           
             ATI11 
           | 
         
         
          | 
             Display caller ID information from the current call (if in progress) 
              or the last call (if between calls). 
            The caller ID information remains until either the modem is reset 
              or until the modem receives another valid caller ID signal. 
           | 
           
             ATI15 
           | 
         
         
          | Display a connection report that USRobotics Technical Support representatives 
            use to help you solve problems. | 
           
             ATI16 
           | 
         
         
          | Display a connection report that USRobotics Technical Support representatives 
            use to help you solve problems. | 
           
             ATI17 
           | 
         
       
        
       
        
       Displaying Help
       
        The Courier 56K Corporate modem provides six Help, or command summary, 
        screens: basic AT command set, ampersand (&) command set, percent 
        (%) command set, dial command options (D), S-Registers (S), and the octothorpe 
        (#) command set. 
      Note: Help screens are not available 
        when a modem makes a synchronous connection using &M6 or &M7. 
      
        
          | For your modem to display | 
          Command | 
         
        
          | A partial summary of the basic command set | 
          AT$ | 
         
        
          | A partial summary of the ampersand command set | 
          AT&$ | 
         
        
          | A partial summary of S-Register functions | 
          ATS$ | 
         
        
          | A partial summary of percent command set | 
          AT%$ | 
         
        
          | A summary of the octothorpe command set | 
          AT#$ | 
         
        
          | Help screen for dial commands | 
          ATD$ | 
         
       
      Note: To see the remainder of the 
        screen for any given command, press any key. 
        
        
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