US Robotics Courier 56K Business Modem with V.92 USR3453C 전단

The USRobotics Courier 56K Business Modem with V.Everything and 
V.Everywhere technology is the latest in the distinguished Courier line. 
Many modems claim reliability, but few match the real-world performance 
of Courier modems. Even fewer offer the multitude of advanced business 
features found on this modem: global usage, Carrier Loss Redial and 
Dialback Security. Remote management capabilities let you configure, 
set up, update or troubleshoot your modems from almost anywhere. When 
failure is not an option, you need the world-class capabilities that only come 
from the top of the USRobotics product line.

• V.Everything® Technology provides support for all key communications protocols
• V.Everywhere™ Technology so that one, highly reliable hardware platform supports connections 

with most international phone systems

• Synchronous/Asynchronous, and leased-line support
• Supports all major operating systems: DOS, Windows 3.1/95/98/Me/NT 4.0/2000/2003/XP/  
  Vista, UNIX, Linux - and operating system that supports and RS-232 serial port.
• Universal power adapter automatically handles global power variations from 100 V to 240 V

• Dial security:

• Autopass works with up to 79 users, and automates logging in between two Couriers by 

including the password in the V.42 error-control request

• Password Prompting, works with any type of  modem, where the host Courier requests a 

password from those dialing in

• Dialback security checks incoming calls for password authorization and then dials back 

predefined numbers to assure only appropriate users establish connections

• Carrier Loss Redial automatically senses, redials, and re-establishes dropped remote connections 

– creates a virtual leased-line connection between two modems, over regular dial-up lines

• Advanced Line Probing technology finds the fastest connection and maintains connections 

under poor line conditions

• Brown-out Protection assures you stay connected even in areas with poor power facilities
• Robust, business-oriented design, component selection, testing, and experience to support non-

stop operation

• Remote Management lets you configure or troubleshoot from almost anywhere
• Instant Update

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automatically checks the USRobotics web site for code updates when you’re 

online and downloads new features at your convenience

• Remote Flash capability lets you upgrade Courier modems at remote locations from a central site