DSL Fast Access: Moving Into Bigger Bandwidths

2007-03-08 10:33:40

( Business )



As more and more people have discovered the Internet, there is now a greater demand for faster connections. Faster connections mean bigger bandwidths, which allow users to download or upload vast amounts of data at a much quicker rate. Industry responds to this demand by providing DSL fast access.

DSL fast access is able to give subscribers much faster speeds than the old dial-up access. You get DSL fast access from your telephone service provider over existing phone lines. The switching and multiplexing technology used in DSL fast access is modern; however, it is still limited by the supporting infrastructure. Most telephone lines still use the twisted-pair copper wires installed decades ago. Telephone companies have not been able to replace the existing copper wire network because of the massive capital investments involved.

In contrast, road runner internet access uses cable modem broadband technology of cable service providers. Cable modem technology rides on hybrid fiber-coaxial (or HFC) networks. Even if the competing infrastructure is only coaxial cable versus twisted copper wire, coaxial cable still offers bigger bandwidth capacity. In tandem with fiber optic cable, the road runner internet access, with its HFC backbone, can give you higher speeds.

These existing broadband technologies, DSL fast access and road runner internet access, may be sufficient for current usage. However, if you will want to access applications that consume a lot of bandwidth, these technologies may not be enough.

Some telephone companies are preparing for that with variations on DSL fast access technology. One option already in use is called asymmetric DSL fast access (ADSL). In the near future, there are plans to mix the copper wire network with limited fiber optic deployments, similar to the HFC approach. With the hybrid networks, some telephone companies will then use very high speed DSL fast access (or VDSL) to deliver up to 25 Mbps of bandwidth.


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