A Trunk Line 1 (T1 line) is a telephone line made from copper or fiber optic cables that can carry more data than a traditional telephone line. T1 lines are perfect for small and medium sized business that need Internet for 20 to 50 users. Businesses can lease T1 lines from an Internet Service Provider (ISP).

Depending on availability and location, a full T1 line costs between $350 and $1,200 per month. Fractional T1 lines cost less and are ideal for apartment buildings and hotels that provide Internet access to residents.


T1 lines provide a stable and reliable broadband connection. A T1 connection is always active, and you can provide Internet access to many computers without modems, telephone lines, and dial-up accounts for each system. T1 lines offer a dedicated and secure high speed connection. You do not need to share your T1 line with anyone else. A T1 line is large enough to send and receive large text files, graphics, sounds, and databases instantaneously.

How It Works

A T1 line consists of 24 individual channel circuits that provide an Internet connection straight from the broadband provider. Each channel has a speed of 64 Kbps. The speed of the T1 surpasses even the fastest dial up modem, which can reach speeds of 56 Kbps. T1 lines can transfer 1.544 megabytes of data per second.

A T1 connection is provided in two ways: in a channel or in a non channel format. Voice and data can be transmitted through these channels. There are several types of T1 lines including full T1, T1 data service, voice T1, integrated T1, fractional T1, point to point, frame relay service, burs table T1, and bonded.

A T1 line connects your computer to the Internet Service Provider (ISP) through a telecommunication provider. The phone system and Internet connection are merged together through a modem. The fiber optic or copper T1 line carries data to the appropriate public data and voice network. The modem converts this data into binary codes that compresses and move data along the Internet. The signal passes through the router to the server. This path is reversed to retrieve and display data on your system.


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