Courier® business products

Courier 56K business modem

• Support page: drivers, firmware, and documents

  • USR3453C Courier 56K Business Modem
  • USR3453C-REF Refurbished Courier Business Modem
  • USR5686G-PRO Courier Lite 56K Business Modem

• Command reference guide

  • USR3453C Courier 56K Business Modem
  • USR3453C-REF Refurbished Courier Business Modem
  • USR5686G-PRO Courier Lite Business Modem (User Guide)

• Datasheet

  • USR3453C Courier 56K Business Modem
  • USR3453C-REF Refurbished Courier Business Modem
  • USR5686G-PRO Courier Lite Business Modem

• Product images

  • USR3453C Courier 56K Business Modem
  • USR3453C-REF Refurbished Courier Business Modem
  • USR5686G-PRO Courier Lite 56K Business Modem

Installation and troubleshooting

• Courier Lite user guide
• Configuring your Courier modem for leased line operation (USR3453C Only)
• Configuring USRobotics modems For use under Unix-type systems
• Setting up dial security
• Online troubleshooting