Definition 1. - A high-speed digital connection capable of transmitting data at a rate of approximately 1.5 million bits per second. A T1 line is typically used by small and medium-sized companies with heavy network traffic. It is large enough to send and receive very large text files, graphics, sounds, and databases instantaneously, and is the fastest speed commonly used to connect networks to the Internet. Sometimes referred to as a leased line, a T1 is basically too large and too expensive for individual home use.

Definition 2. - The T1 (or T-1) carrier is the most commonly used digital line in the United States, Canada, and Japan. In these countries, it carries 24 pulse code modulation (PCM) signals using time-division multiplexing (TDM) at an overall rate of 1.544 million bits per second (Mbps). T1 lines use copper wire and span distances within and between major metropolitan areas. A T1 Outstate System has been developed for longer distances between cities.

Definition 3. - A type of high speed Internet connection that provides a great deal of bandwidth. Many businesses lease T1 lines to connect to the Internet, but because they are expensive and offer more bandwidth than most small businesses and homes need, they are not realistic solutions for small and low-demand Internet users.

Definition 4. - The T-carrier system, introduced by the Bell system in the US in the 1960's, was the first successful system that supported digitalised voice transmission. The original transmission rate (1.544 Mbps) in the Northern T1 line is in common use today in ISP (Internet Service Provider) connections to the Internet

Northern, Maryland, May. 29 /Hunter Sheffield/ -- Higher productivity for small to medium sized businesses is just around the corner thanks to commercial grade broadband services that are now being delivered at a fraction of their previous cost. Due to the ever increasing competitive marketplace and a mad dash to consolidate networks, telecoms are offering their premium business services to small businesses for a fraction of what they used to cost just a few years ago. Businesses who use more than four regular phone lines can now upgrade to dynamic integrated T-carrier circuits for the same price.

To see how customers are reacting to this new product, we interviewed a series of small business owners in Maryland who are currently using the service. One such individual shared with us his enthusiasm for the enhanced capabilities dynamic service offers. "When I was first contacted about the dynamic integrated T1, I was deeply skeptical of what I was hearing. Over the course of my brief dealings with telephone companies, all I got was less service with more cost. Now I am happy to say that I am getting more for less, which makes for one very happy customer."

The old-school integrated T-1 was analog in nature, and came with 24 configurable channels (called a trunk) which could be configured to carry either voice or data traffic. The new "dynamic" trunks are all-digital and can change on-the-fly to carry either data or voice traffic. This comes in handy when none of the voice lines are in use - all channels can revert to carrying data traffic, giving the end-use a full 1.5 MBPS of broadband. Each phone call requires only 64K of bandwidth, so even a small handful of calls only slows down the data connection by a nominal amount.

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