The copper phone wire has very limited bandwidth. It was designed to provide 3,000Hz bandwidth, perfectly adequate for a voice signal. Fiber links offer over 1,000 times more bandwidth capacity and can be carried over 100 times the distance than copper can.
The chart pictured here shows the specific advantages Fiber has over copper wiring in regards to bandwidth and distance.
When it comes to LANs or premises cabling, a lot of controversy, a lot of "positioning" and a ...view middle of the document...
The wire most use for LANs is a lot younger than fiber optics. Fiber use is over 20 years old, but computer networks on unshielded-twisted-pair cable (UTP) have only been around about 15 years. In that time, UTP has gone through at least 5 generations, each time to keep up with the incrementing bandwidth requisites of LANs; the ever evolving technology of LAN wire is hardly the “telephone wire” that the majority think of it as.
Below is a chart showing the LANs growth in capacity
LAN | Bandwidth |
Ethernet | 10 Mb/s |
FDDI | 100 Mb/s |
Fast Ethernet | 100 Mb/s |
ATM | 55, 155 Mb/s |
Gigabit Ethernet | 1,000 Mb/s (1 gigabit/s) |
10 Gigabit Ethernet | 10 Gb/s |
But still, even with all the efforts that copper cabling manufactures have made to stay relevant in todays LAN structuring, installation is a problem that most face if one needs the maximum performance offered.
A number of magazine articles and even a representative of AMP have been recently quoted as saying that as much as 80-90% of all Cat 5 cabling was improperly installed and would not provide the rated performance. Contractors have been quoted as saying that 40% of their Cat 6 installations pass certification tests. It seems that copper cabling used in LAN is preferred when used in the short distance, and is ideal for wiring a LAN’s...