US Robotics Courier 56K V.92 Business Modem USR013453B Merkblatt

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* Capable of receiving at up to 56 Kbps and sending at up to 48 Kbps (or 31.2 Kbps with V.90 server). Due to FCC regulations on power
output, receiving speeds are limited to 53.3 Kbps. Actual speeds may vary. V.92 and V.90 features require compatible phone service
and support from your Internet Service Provider (ISP). U.S. Robotics modems featuring V.92 enhancements are backward compatible
and will negotiate the highest possible speed when connecting to an ISP.
† Requires Windows operating system.
Copyright© 2003 U.S. Robotics Corporation.  All rights reserved.  U.S. Robotics, the U.S. Robotics logo, and V.Everything are registered
trademarks of U.S. Robotics Corporation.  Courier,  V.Everywhere, and Ready. Set. Connect. are trademarks of U.S. Robotics Corporation.
Other product names are for identification purposes only and may be trademarks of their respective companies.  Product specifications
subject to change without notice.
Features & Benefits
and V.Everywhere™ Technology 
Supports most communication protocols, operating
systems, and international phone systems for
maximum flexibility.
Global Usage – Get connected from almost
anywhere around the world. The included
universal power adapter automatically handles
global power variations from 100 V to 240 V.
Integrated Multilayered Security – Dial and
Dialback options check incoming calls for
verification and password authorisation – 
protects your data and network from hackers.
V.92 Functionality – V.92 offers greater online
flexibility and exciting new features: Modem 
on Hold, Quick Connect, and V.PCM Upstream. 
Remote Operation – Upgrade your modem’s
firmware through remote Flash and management
features; perform setup and maintenance functions
from another site. Keeps maintenance costs down
and operations current.
Robust Reliability – Business-oriented design,
component selection, extensive testing, and 
real-world experience save you time, money, 
and trouble.
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.
Trouble-Resistant Design – Works to keep you
connected under adverse line conditions – special
circuitry keeps this modem running when others
would have failed.
Instant Update
– Automatically checks the 
U.S. Robotics Web site for code updates when
you’re online and downloads new features 
at your convenience. See Minimum System
Requirements for software requirements.
Standards and Protocols Supported
• ITU V.92/V.90 up to 56 Kbps downloads
• Data: V.92, V.90, V.34, V.32bis, V.32, V.22bis, 
V.22, V.23, and V.21 
• ITU V.34 at 33.6 Kbps or 28.8 Kbps
• V.32 at 19.2 Kbps (21.6 Kbps between 
Courier modems with ASL)
• ITU V.32bis at 14.4 Kbps
• HST at 16.8 Kbps
• Compatible with most ITU and Bell standards 
down to 300 bps
• Data Error Control; Compression: V.42/V42bis 
and MNP2-4/5
• Fax: ITU V.17 at 14.4 Kbps, ITU V.29 at 9600 bps,
ITU V.27ter at 7200 bps, Group III, TIA/EIA 578 
Class 1, and TIA/EIA 592 Class 2.0
• Caller ID and distinctive ring (require service 
from your local phone company/Caller ID may 
not be supported in some countries)
Minimum System Requirements
• Supports all major operating systems: DOS,
Windows 3.1/95/98/Me/NT 4.0/2000/XP, UNIX,
Linux, and any operating system that supports an
RS-232 serial port
• IBM compatible PC with 486DX or Pentium
processor or equivalent
• Available RS-232 serial port
• 56K compatible local analogue phone line
• V.90 requires a V.90 56K ITU standard capable
service provider
• V.92 requires a V.92 56K ITU standard capable
service provider
• V.92 Call Notification feature requires Call Waiting
service from your local phone company
• V.92 Call Identification feature requires Call
Waiting/Caller ID services from your local 
phone company
• Internet Call Notification (ICN) supports 
Windows 95/98/Me/2000/XP
V.92 Requirements for this Modem
• V.92 features require V.92 56K ITU standard 
capable service provider
• V.92 modem on hold feature requires Call 
Waiting service from your local phone company
• V.92 Call Identification feature requires Call 
Waiting/Caller ID services from your local 
phone company
Regulatory/Agency Approvals
• FCC approved (Part 15/Part 68)
• IC approved (ICES-003/CS-03) 
• UL/CUL listed
• CE
Package Contents
• U.S. Robotics Courier 56K Business Modem
• RJ-11 phone cord (6 ft/2.13 m)
• Universal power adapter (100 V – 240 V)
• RS-232 serial cable (3 ft/0.91 m)
• Quick Installation Guide
• Quick Reference Card 
• Installation CD-ROM 
• Limited lifetime manufacturer warranty  from
date of purchase
Model Number
• USR3453B
Business Modem
Secure Internet and printer 
Global platform for
worldwide compatibility
Integrated multilayered
security features
Remote management
Carrier Loss Redial for
connection stability
Synch/asynch and 
leased-line support