A T1 is a high speed telecommunication line that can carry 24 digitalized voice channels, or it can carry data at a rate of 1.544 megabits per second. TI lines carry about roughly 60 times more data than a normal dial-up modem.

Simple answer - T-1 is a type of telephone service capable of transporting the equivalent of 24 conventional telephone lines, using only two pairs of wires. Technical Answer - The T-1 was originated by AT&T in 1962 as a method to be able to send additional data along a common 2 pair of copper wire. The technology was originally to be used for "long-haul" voice communication, but in recent times has been used for data transmission.

The T1 connection is a dedicated link. Unlike ISDN and analog modem connections the T1 connection is up 24 hours a day. This gives you some additional options like running servers.

For most sendmails, no special configuration is required. Eric Allman tells me that if FEATURE(always_add_domain) is included in sendmail's configuration, you can leave the rewrite option off. If your sendmail complains ''sendmail does not relay'', make sure your sendmail.cf file says Cwlocalhost so that sendmail recognizes 'localhost' as a name of its host.

Answer - The main advantage of T-1 is cost savings over equivalent service on regular analog lines. In general the cost of most 24 channel T1s is about the same as 12 standard telephone lines. This enables a business requiring 24 phone lines to do so for the cost of 12. Another advantage is that T-1 is a digital transmission and therefore less prone than regular phone lines to loss and interference.

Answer - Speed is the primary reason for data over T1. If a company transmits large files regularly outside their office an T1 can be a great asset as well as if they receive large amounts of Data. With the expansion of the internet and the requirement to send data at higher speeds, T-1 technology has been essential for dedicated T-1 lines.

Answer - With a piece of equipment called a multiplexer (which is similar to a channel bank), the T-1 can be distributed into data circuits and voice channels. For example, a T-1 could be used to carry 12 telephone lines plus two data circuits at 386K baud. This would be an example of an integrated T1 circuit.

T1 access is quite simple, it bypasses your local telephone companies switching equipment and directly connects your customer premise with your long distance carrier. This is where the major savings comes in as it reduces the switching costs associated with the switching equipment at your local telephone company. This service is a commercial product and is recommended for customers billing $1500+ per month in long distance charges or more.

When a carrier gives you the option of purchasing a full T1, you can get the full 1.544Mbps circuit unchannelized direct into the Internet (or Frame Network, or Point-to-Point); also known as a clear channel T1. A Fractional T1 is a channelized T1 with only some of the channels turned on. Fractionals are normally priced in terms of Kbps. For example you can get 384kbps, 512kbps or 768kbps from most carriers.

Because T1s can be broken out into channels, voice and data can run side by side on the same circuit. They require a device to convert the signaling from that used on the T1 into signaling that can be used by the phone, the equipment, or router. The technical name for this process is multiplexing and the equipment required is called a multiplexer; but it is known more commonly as a channel bank, CSU/DSU or T1 card.

A T1 circuit is a digital telephone circuit which connects one site to another comprising the basics of a Telemedicine or Telehealth network. The circuit consists of (24) 64K channels which comprise a 1.544MB connection.

If you run your own webserver you can have as many as you want. Often your ISP will provide some space for a web site with your account.

Yes. Some types of two-way video conferencing and other sustainable high-bandwidth transfers do not work well on T1 because the flow of data from these applications is packet-based. For those who need the ability to access multiple Internet Service Providers (ISPs) in a "dial-up" scenario, T1 may not be the best fit as it is a dedicated connection.

To use T1 you need at least a router with a built in T1 link and a NIC (Network Interface Card). Most likely you'll need a CSU/DSU.

Make sure your ISP is not having any general problems with its T1 circuits or general connectivity. If that is not the problem, you should call the phone company. T1 Los Angeles T1 New York T1 Dallas T1 San Diego T1 Houston T1 San Jose T1 Las Vegas T1 Miami T1 San Francisco T1 Chicago T1 Minneapolis T1 Seattle T1 Boston T1 Austin T1 San Antonio T1 Atlanta