3COM (Computer Communication Compatibility)
founded by
Robert Metcalfe
in 1979, today 3COM is a large manufacturer of computer modems,
network cards, pc cards, servers, hubs, palm pilots, and various other
computer components.
Address
3COM CORPORATION
( Computer Communication Compatibility)
350, Campus Drive
Marlborough,
MA 01752-3064
USA
Convergence/IP Telephony, LAN Switches (IntelliJack® Switches), LAN
Switches (Modular), LAN Switches (Stackable/Edge), LAN
Transceivers / Cables, Maintenance Services, Network Interface
Cards, Network Management, Professional Services, Routers, Security,
Wireless
Security Solutions
3Com® OfficeConnect® Content Filter Service
(Cost-effectively protect small business network perimeter and
provide a first line of defense against Internet threats with an
optional premium content filter service to help keep workers
productive and children safe.
3Com TippingPoint™ Security Posture Assessment
(This comprehensive evaluation identifies network vulnerabilities
and potential threats. It provides recommendations on policies,
procedures and security tools to eliminate weaknesses.
TippingPoint X505
(The TippingPoint X505 is the first integrated security platform
built upon Intrusion Prevention System (IPS) technology, combining
state full inspection firewall, IPSec VPN, bandwidth management, web
content filtering, and dynamic routing.)
Firewall Routers, Web Site Filter, Network Management Software,
Wireless Switch Management,
Convergence Solutions
3Com Education Module
(Streamline communications and enhance safety and security with the
3Com Education Module—a software solution on the 3Com NBX® IP
telephony platform that can improve the way teachers, safety
officials, parents, students, and administrators communicate.)
3Com Platform Rebranding – SuperStack® 3 NBX Now NBX V5000 IP
Telephony Platform
(The SuperStack 3 NBX platform is now the NBX
V5000 IP telephony platform, helping customers more clearly
distinguish the solutions that best meet their needs from among the
range of highly scalable 3Com solutions: 3Com NBX 100, V3000, and
V5000 platforms.)
Networking Solutions
3Com Switch 4500 Family
(The 3Com Switch 4500 Family of managed, stackable 10/100 Ethernet
switches provides secure, flexible LAN connectivity for small to
medium enterprise and branch office networks. The Switch 4500 Family
offers Layer 2 switching and dynamic Layer 3 routing, as well as
robust security, Quality of Service, and management features to
deliver intelligent edge connectivity for essential business
applications.)
3Com OfficeConnect Managed Layer 2 Switches
(3Com OfficeConnect Managed Layer 2 switches
offer a full-featured, low-cost LAN solution for small workgroups
and multisite branch office deployments. Compact, no-fan, desktop
design fits in small or confined spaces. Advanced features include
Power over Ethernet support, IEEE 802.1X security, and Quality of
Service traffic prioritization options.)
3Com SuperStack 3 Switch Family Software Enhancements
(Software enhancements to several products in
the SuperStack 3 switching family provide advanced functionality in
terms of security, Quality of Service, and management.)
3Com WXR100 Remote Office Wireless LAN Switch
(The 3Com WXR100 Remote Office Wireless LAN
Switch, ideally suited for enterprise branch offices requiring
streamlined security and centralized WLAN and RF management,
features two ports, one with Power over Ethernet connectivity. It
can support three managed access points, local or external RADIUS
authentication, and seamless integration with other 3Com wireless
switches and controllers.)
Global Services
Maintenance Services, Professional Services
United Kingdom
Address
3Com Corporation
Boundary Way,
Hemel Hempstead
Hertfordshire HP2 7YU ENGLAND
Phone
+44.0.1442.438.000
Fax
+44.0.1442.438.333
Website
Singapore
Address
3Com Technologies
3 Changi North
Street 2
Singapore 498827
Phone
+65.6543.5000
Fax
+65.6543.6278
Website
1979
Robert Metcalfe formed 3Com Corporation in Santa Clara, California, to
develop Ethernet-based networking products. Metcalfe developed Ethernet
while at Xerox Corporation's Palo Alto Research Center (PARC), and it
later evolved into the world's most widely used network protocol.
1988
3Com introduces the 3+Open network, based on Microsoft's Lan Manager
(based on IBM's old PCNet). In 1990 a famous "shoot out" was held
between 3+ and Novell NetWare. 3Com dropped out of the network
software business in Dec 1990.
1995
Gigabit Ethernet introduced by 3Com,
Sun and Compaq.
1997
3Com buys U.S. Robotics
for $6.6 billion making the consolidation the largest in the history
of computer companies.
X2
A technology developed by U.S. Robotics (now 3COM) for delivering data
rates up to 56 Kbps over plain old telephone service (POTS). It was
long believed that the maximum data transmission rate over copper
telephone wires was 33.6 Kbps, but X2 achieves higher rates by taking
advantage of the fact that most phone switching stations are connected
by high-speed digital lines. X2 bypasses the normal digital-to-analog
conversion and sends the digital data over the telephone wires
directly to your modem where it is decoded. 3COM has announced that
future X2 modems will conform to the new V.90 standard approved by the
ITU. And users with older X2 modems may upgrade their modems to
support V.90. While X2 offers faster Internet access than normal
modems, there are several caveats to using an X2 modem:
1. The high speeds (roughly 53Kbps) are available only with downstream
traffic (e.g., data sent to your computer). Upstream traffic is
delivered using normal techniques, with a maximum speed of 33.6 Kbps.
2. To connect to the Internet at X2 speeds, your Internet Service
Provider (ISP) must have a modem at the other end that is also X2 or
supports V.90.
3. Five X2s do not make one X10.
4. Even if your ISP supports has X2 or V.90, you might not achieve
maximum transmission rates due to noisy lines or other limiting
factors, a common characteristic of X2. Take a look at 3COM on the web
at
http://www.3com.com/.
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