Telecommunications service providing permanent leased lines operating at a bit rate between 64 kilobits per second and 1.544 megabits per second. See T1.
A private, dedicated leased line that goes directly from your office to your Internet Service Provider (ISP), providing a guaranteed transmission speed. Leased lines provide guaranteed bandwidth, since they are not shared with other users. Fractional T1 lines are cheaper than at full T1 (1.544Mbps). The most common fractional T1 speeds are 256 Kbps and 384 Kbps.
A WAN communications service that provides the user with some portion of a T1 circuit which has been divided into 24 separate 64 kbps channels.
A portion of a T1 circuit. A full T1 allows transmission at 1,544,000 bits per second. A fractional T1 circuit allows transmission at lower speeds or 384,000, 512,000, or 768,000 bits per second.
The utilization of a portion of the available channels of a T1 line (but not all).
Use of bandwidth in 56/64 kbps (DS0) increments of a T1 facility or up to 24 channels at 1.544 Mbps.
A T1 installation in which the full circuit is installed, but only some of the 24 channels are used. Since it has access to less bandwidth to send and received, a fractional T1 has a lower monthly cost than a full T1
Service offering data rates between 64 kbps (DS0 rate) and 1.536 Mbps (DS1 rate), in specified intervals of 64 kbps. It is typically provided by a carrier in lieu of a full T-1 connection and is a point-to-point arrangement. A specialized multiplexer is used by the customer to channelize the carrier's signals.
A T1 line that consists of 23 B channels and 1 D channel. The single D channel is used for clocking purposes.
This term refers to using a theoretical "piece" of a T1 line, such as 128 Kbps, 256 Kbps or 512 Kbps worth of the 1.5 Mbps T1 line. Many ISPs offer fractional T1 as a lower-cost alternative to a full T1, and a higher-cost alternative to ISDN. However, if you check the prices it's almost always worth it to go for full T1. The phone company has to install a full T1 connection anyway, and you'll just be paying a bit more a month. Basically, since a T1 is only four wires, the full line is installed and the ISP will only allow traffic up to the limit you are paying for.
This term refers to using a theoretical "piece" of a T1 line, such as 128Kbps', 256Kbps', or 512Kbps' worth of the 1.5Mbps T1 line. Many ISPs offer fractional...
A portion of a T1 circuit that has been divided into 24 separate 64Kbps channels. Actual size is a multiple of 64.
T1 service offered in fractional amounts based on 64-Kbps increments. Full T1 is 1.544Mbps.
A service provided by carriers, where a full T1 link is leased to the customer, but the service charge is calculated based only on the number of timeslots used.
A service that lets a customer use less than 24 channels on a T1 line without paying for the entire line. Customers can purchase a portion of TI bandwidth in segments of 64 Kbps.
A group of channels on a DS1 that are less than 24. The T1 must be channalized first.
In the North American or Japanese hierarchies, the tariffed use of a data rate corresponding to fewer than the 24 channels served by a T1 line.
