Transport layer protocol used for reliable full-duplex transmission across the web. It is commonly used together with IP and referred to as the TCP/IP suite or TCP/IP stack of protocols.
Time Division Multiplexing (TDM)
The Time Domain Multiplexing makes the conversion of multiservice applications as voice, analogue data, asynchronous and synchronous low rate, contact relay information… in digital information nx64kbps Time Slots or DS0 framing or unframed with E1, T1, E3, T3 interfaces cross-connected by DACS and transported over copper, fiber, microwave point to point or multiplexed by a SDH/SONET device.
Time Division Multiple Access (TDMA)
Similar to TDM, multiple signals occupy the same channel by using pre-assigned time slots. TDMA is used in wireless communications and refer to the possibility of having multiple senders (such as multiple radio devices) over and one receiver, as opposed to one sender and one receiver in a wired TDM scheme.
Trivial File Transfer Protocol (TFTP)
Extremely simple file transfer protocol. Provides no authenticity or security. Is commonly used on private networks to transmit updates and configuration files.
Trace Identifier Mismatch (TIM)
A communication alarm in STM where the trace identifier of this network element does not match the trace identifier of the connected SDH element.
Terms of Service (ToS)
Rules one must follow when using a service. Generally refers to behavioral rules as compared to distribution and back up rules in software licensing agreements (EULA).
Time Slot (TS)
A measure of bandwidth. 1 time slot = 1 TS = 1 kilobit per second = 1 kbps
Time Slot Interchange (TSI)
A device in a switching system that allows any incoming byte on a tributary (input) to be mapped to any other byte on the output. Devices that do not have TSI are said to be "hard wired."
Terminal Timing Mode (TTM)
The condition when the unit uses its own clock, as compared to external timing mode where an external clock source is used.
Tributary Unit (TU)
In SONET, a virtual tributary (VT) along with a pointer that identifies the location of the VT used for switching and cross-connecting.
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