You are bidding on the USRobotics Model 3453C Courier 56K business modem. The modem has been tested and works. Included is the modem and power cable.I no longer need it as I was just using it for faxing and have a VoIP line. Click here for more specs.The modem has been upgraded to the latest firmware. This is a great modem that sells for over $200 new. Bid today for a great deal only on ebay! Happy eBaying and good luck!!Model 3453C
Courier™ 56K* business modem
V.Everything® and V.Everywhere™ TechnologyThe 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 Dial
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.Mission critical dial-up connectivity for BusinessIncredible
Compatibility and
Flexibility
• 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 – any operating system that supports an RS-232 serial port
• Universal power adapter automatically handles global power variations from 100 V to 240 VIntegrated
Multilayered
Security
• 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
Rock-solid Reliability • 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 nonstop operationPowerful
Management Tools
• Remote Management lets you configure or troubleshoot from almost anywhere
• Instant Update† 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 siteModel 3453C
Courier™ 56k* business modem

Minimum System Requirements
Hardware
• Supports all major operating systems: DOS, Windows
3.1/95/98/Me/NT 4.0/2000/2003/XP/Vista, UNIX,
Linux, and any operating system that supports an RS-232
serial port**
• Available RS-232 serial port
• 56K compatible local analog phone line
Software (ICN/Instant Update)
• IBM compatible PC with 486DX or Pentium processor or
equivalent
• Internet Call Notification (ICN) supports Windows 95/98/Me/2000/XP
Telco/PTT
• 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 companySpecifications & Standards
• 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/V.42bis 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 Temperature: Operating Temperature conditions: 0 to 50
degrees C, Non-Operating Temperature conditions: -20 to 70
degrees C
• Humidity: Operating Humidity conditions: 20% to 80% noncondensing,
Non-Operating Humidity conditions: 5% to FCC approved (Part 15/Part 68)
• IC approved (ICES-003/CS-03)
• UL/CUL listed
• CE approved (Class B)
Product Dimensions/Weight
• 5.1 x 10.2 x 1.2 in. (13 x 26 x 3 cm)
• 1.1 lb (0.5 kg)* 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.
** Support for 64 bit operating systems requires a driver update (available in the support section of www.usr.com).
† Requires Windows operating system.