Definition 1. - 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 2. - 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 Lee T1 line is in common use today in ISP (Internet Service Provider) connections to the Internet

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. - 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.

Lee, Illinois, Jun. 17 /Chris McMillen/ -- Illinois is a place that we found was a hot spot for small business owners making the move over to dynamic T-1 lines. One business owner that we interviewed gave glowing reviews of his move to TelePacific's "OnePac" dynamic product. Keith Gray explained "I used to have a regular integrated T1 with 10 voice lines and 14 data channels. When no one was using the phone in my office, we were limited to just 896 KB of bandwidth. After searching on the Internet for better options, I found that I could reduce my price from $850/month to $500/month, and at the same time have 14 voice lines and 1.5 mbps of broadband. I didn't take long for me to pull the trigger and make the change."

There are two basic "integrated" DS-1 configurations, analog and digital. The 24-line bundle in which they come is termed a "trunk". The main difference between analog and digital trunks is their flexibility. With digital trunks, voice lines not in use can be dynamically reconfigured to carry data traffic, so they don't sit idle. Analog trunks on the other hand can not change their function once configured by the service provider. Data channels remain data channels and the same for voice channels, even if there is no voice traffic.

Lee ShoreTel Dealers | Lee Nortel Dealers | Lee NEC Dealers | Lee Mitel Dealers | Lee Cisco Dealers | Lee IP PBX Phone System | Lee Avaya Dealers