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The latest technology to obtain high bandwidth over normal telephone lines at low cost is Digital Subscriber Line, commonly referred to as ADSL or xDSL, technology. This new family of technologies has the ability to revolutionize the way Internet access is done for private users and small businesses, provide low cost telecommuting services and movies on demand, and many other low cost high…

Ethernet was originally designed to operate over a heavy coaxial cable, and was later updated to also support a thinner, lighter, coaxial cable type. Both systems provided a network with excellent performance, but they utilized a bus topology which made changing a network a difficult proposition, and also left much to be desired in regard to reliability. Also, many buildings were already wired…

Thick Ethernet, officially known as 10 Base 5, is the oldest form of Ethernet. It was originally developed in the late 1970’s by Digital Equipment Corporation, IBM, and Xerox, and became an international standard (IEEE 802.3) in 1983.

Topology & Cabling

10 Base 5 is laid out in a bus topology, with a single coaxial cable connecting all nodes together. At each end of the coaxial cable is a…

1000 VG ANYLAN – What is it?

What Is It?

100VG-AnyLAN is Hewlett-Packard and IBM‘s answer to 100 Base-X (Fast Ethernet) technology. It is a 100 Mb/s deterministic network which uses 4-pair UTP   cable. If it is used with Category 3 or 4 cable, then it can operate at a distance of up to 330 feet. With Category 5 cable, it is rated at a distance of 600 feet. It is compatible with both Ethernet and Token Ringframe types, which…