T

T1
T1 is one of the T-carrier telecommunication standards for multiplexing digitized voice signals. A T1 channel operates at 1.544 Mbps. Each T1 channel (64 Kbps) was designed to carry a digitized representation of an analog signal (a telephone call) that has a bandwidth of 4,000 Hz. Originally, 64 Kbps was required to digitize a 4,000-Hz voice signal. Current technology has reduced that requirement to 32 Kbps or less; however, a T-carrier channel is still 64 Kbps.

T1 multiplexer (MUX)
A T1 MUX is a device that breaks an outgoing bit stream into T1 time slices, and reassembles incoming time slices into a continuous bit stream. It sits between a LAN and a DSU (or DSU side of a CSU/DSU).

Telecommunications Industry Association (TIA)
TIA is a subgroup of EIA that focuses on electronic products for data communications.

Telnet
Telnet is an Application Layer protocol that provides a remote login capability to another computer on a network.

time-division multiplexing (TDM)
TDM is a technology that allows multiple signals to travel over the same physical medium by guaranteeing each signal a fixed amount of bandwidth on a rotating basis.

Token Ring
Token Ring is a LAN protocol for ring topologies that operates at 4 and 16 Mbps.

Transmission Control Protocol (TCP)
TCP is a Transport Level protocol that provides reliable, full-duplex communication between two software processes on different computers. TCP normally uses IP to transmit information across the underlying network.