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) carries a digitized representation of an analog signal that has a bandwidth of 4,000 Hz. Originally, 64 Kbps was required to digitize a 4,000-Hz voice signal. Current digitization technology has reduced that requirement to 32 Kbps or less; however, a T-carrier channel is still 64 Kbps.

Thicknet
Thicknet is also known as 10Base5 or Yellow Wire. Thicknet can carry a signal 500 meters before a repeater is required. The maximum number of nodes allowed in a trunk segment is 100. The maximum number of trunk segments allowed in an Ethernet network is five, of which only three may be populated with nodes. Thicknet is no longer installed in computer networks.

Thinnet
Thinnet (or 10Base2) can carry a signal 185 meters before a repeater is required. The maximum number of nodes that can be connected to a Thinnet trunk segment is 30.

Time-Division Multiplexing (TDM)
TDM is a multiplexing technology that guarantees each port a fixed amount of bandwidth on a rotating basis. TDM is suited to constant bit rate traffic.

Token Ring
Token Ring is a LAN protocol used in computer networks. Token Ring operates at 4 and 16 Mbps.

Topology
Topology refers to the specific physical configuration of a network or a portion of a network. Ring and star are examples of different network topologies.

Traffic
Traffic refers to the combination of information flow going to and from devices attached to a network.

Traffic Monitor
A traffic monitor is a device that monitors the status and performance of Physical Layer media, such as cables or leased lines, which are too simple to include their own SNMP agents.

Transmission Control Protocol (TCP)
TCP is normally used in conjunction with IP in a TCP/IP-based network. The two protocols working together provide for connectivity between applications of networked computers.

Transmission Control Protocol/Internet Protocol (TCP/IP)
TCP is a Transport Layer protocol used to send messages reliably across a network. It is usually paired with IP. TCP/IP also describes suites of protocols, software, and applications designed to work over networks based on TCP and IP.

Transport Driver Interface (TDI)
TDI is the Windows NT interface layer between various transport protocols (Sequenced Packet Exchange [SPX] or TCP) and server or redirector software interfaces.

Twisted Pair
A twisted pair line, as the name implies, consists of a pair of wires twisted together.