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General Support

US phone number: (888) 428-9450


Courier 56K Business Modem

  • Support Page: Drivers, Firmware, and Documents
    • USR3453B Courier 56K Business Modem
    • USR3453C Courier 56K Business Modem
  • Command Reference Guide
    • USR3453B Courier 56K Business Modem
    • USR3453C Courier 56K Business Modem
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    • USR3453B Courier 56K Business Modem
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    • USR3453B Courier 56K Business Modem
    • USR3453C Courier 56K Business Modem

Installation & Troubleshooting

  • Installation Guide
  • Configuring your Courier modem for leased line operation
  • Configuring USRobotics Modems For use under Unix-Type Systems
  • Setting up Dial Security
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Courier Business Products • Modem Technology
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