Definition 1. - 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 Arbutus T1 line is in common use today in ISP (Internet Service Provider) connections to the Internet

Definition 2. - 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 3. - 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 4. - 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.

Arbutus, Maryland, Jul. 16 /Kim Mankaryous/ -- Business broadband, its price, and who can afford it, are changing. Every day an increasing number of business are finding the new broadband services made available to them by the "new" telecommunications companies that are emerging from the latest round of mergers and acquisitions. Overlapping networks are being consolidated into bigger and leaner footprints, lowering the cost of dynamic integrated digital signal 1 (DS1) service to the price range of about five regular phone lines. Small to medium size business can now afford services once reserved for the Fortune 1000 companies.

Ultimately it all comes down to basic economics. Whenever a technology can offer more features for less money that what businesses are currently paying, it's just a matter of time before the flood gates open up with companies wanting to adapt the new standard. According to the Telecommunications Research Institute, headquartered in Miami, Florida, the mass migration to dynamic integrated service offerings is only being held back by a lack of education and/or the ability of carriers to reach their target market. "Most people are leery of advertising and solicitations by phone company salesman." comment Bill Bradley, analyst.

Prior to the advent of the "all digital" integrated T-1 in 2005, customers only had one choice when it came to dedicated service: analog trunks (24 line bundles). Not only where analog trunks expensive - the average cost ranging from $800 to $1500 per month depending on the user's geographic proximity to the LECs point of presence - they could not re-allocate unused voice channels to carry data. Digital trunks, on the other hand, can reclaim voice lines not in use and put them to work carrying high-speed data packets. That means users enjoy the full 1.5 Mbps of broadband when they are not on the phone.

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.

"Commercial telecommunication providers were never on my Christmas card list" commented Jake Chang, a small business owner in Denver, Colorado. "Dealing with them meant erroneous bills, long wait times when trying to reach customer service, and taxes I could never understand. Now that we migrated to a dynamic integrated T1, my phone lines and high speed internet are bundled into one line with super reliability. Not to mention the fact that XO Communications, a CLEC, treats me like they actually want my business - not like I'm a pain in the you-know-what."

"True convergence means that I can finally have just one phone company, without being at the mercy of Ma Bell" added Steven Lankto of Jersey City. "Having a data pipe that is intelligent enough to know when it needs to become a voice pipe, without any input from me, is genius. I'm glad that the technology is here and in the price range of businesses like mine." Mr. Lankto isn't alone; there is now widespread acceptance of integrated voice and data service in the New York metro area and across most larger U.S. cities.

The only thing that can get in the way of future progress is the law. You know, the one that requires the RBOCs to lease their local loops to CLECs at a reduced rate so that the customer can get a dedicated connection between their office and the CLECs' network. If the FCC decided to lift this requirement, this whole deck of cards could come down in a hurry, and when it does, you can kiss dynamic integrated T1 service for under $500 good bye! Change does not happen quickly in an industry as so heavily regulated as Telecommunications. Recent industry consolidation has provided huge alternatives to the incumbents, who are now under pressure to keep up with new technologies while charging better prices to retain and attract new customer bases.

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