A Brief History Of Fiber-Optic Communications Optical communication systems date back to the 1790s, to the optical semaphore telegraph invented by French inventor Claude Chappe... Learn More Optical-Cable Construction The core is the highly refractive central region of an optical fiber through which light is transmitted... Learn More power protection

Internet DSL is a broad term that consists of various variations - SDSL (Single-line Digital Subscriber Line), 1.5 Mbps; Asymmetric Digital Subscriber Line (ADSL), ranging up to 1.5 Mbps; Very high-data-rate Digital Subscriber Line (VDSL), ranging up to 2.3 Mbps; High-bit-rate Digital Subscriber Line (HDSL), 1.5 Mbps; and Rate Adaptive Digital Subscriber Line (RDSL), diverse speeds. A digital subscriber line facilitates separate channels for fax and voice. Hence, faxes and phone calls can be carried simultaneously with high-speed data across the line. Business - Click the link on the left to visit our partner sites under business/finance/loan/mortgage category more 1 2 3 4 5 Computers - Click the link on the left to visit our partner sites under computer hardware/software/peripheral category more 1 2 3 4 5 Internet - Click the link on the left to visit our partner sites under webhosting/webdesign/internet marketing category more 1 2 3 4 5 Software - Click the link on the left to visit our partner sites under software category more 1 2 3 4 5 Web Design - Click the link on the left to visit our partner sites under web design/development category more 1 2 3 4 5 Web Hosting - Click the link on the left to visit our partner sites under web hosting category more 1 2 3 4 5 Web Promotion - Click the link on the left to visit our partner sites under search engine optimization/internet marketing category more 1 2 3 4 5 Web Resources - Click the link on the left to visit our partner sites under other web category more 1 2 3 4 5 Recreation - Click the link on the left to visit our partner sites under travel/hotel/cruise category more 1 2 3 4 5 Casino - Click the link on the left to visit our partner sites under online gambling/poker/blackjack/roulette category more 1 2 3 4 5 Health - Click the link on the left to visit our partner sites under online pharmacy/hospital/health category more 1 2 3 4 5 Shopping - Click the link on the left to visit our partner sites under online shopping/gift category more 1 2 3 4 5 Miscellaneous - Click the link on the left to visit our partner sites under all other categories more 1 2 3 4 5   DSL technology was founded in 1988, when a group of engineers invented a method to transfer digital signals through the unexploited frequency spectrum available on the twisted pair of cables that run between a customer’s home and the telephone company's telephone exchange. Employing DSL technology in the telephone line provides digital communication without disturbing the voice services. DSL gained prominence in the late 1990s, when major cable television providers started marketing broadband Internet access. Today, Digital Subscriber Line is the main competition for cable modems in offering high speed Internet access to homes in North America and Europe. The latest standard ADSL2+ can provide more than 20 Mbit/s over about 1.2 miles.

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