Telecommunications terms starting with T

499 terms

  1. T Abbreviation for thymine.
  2. T junction See series T junction.
  3. T reference point In Integrated Services Digital Networks (ISDN), the conceptual point dividing NT2 and NT1 functional groupings in a particular ISDN arrangement.
  4. T-carrier The generic designator for any of several digitally multiplexed telecommunications carrier systems.
  5. T-coupler A passive optical coupler having three ports (three fibers). Note 1: Two isolated inputs may be combined into one output; or one input, into two isolated…
  6. T-interface For basic rate access in an Integrated Services Digital Network (ISDN) environment, a user-to-network interface reference point that (a) is characterized…
  7. T1 (carrier) See T-carrier.
  8. T1 line A full-duplex digital transmission facility that is composed of transmission media (optical or metallic) and regenerators that carry one DS1 signal.
  9. T1C (carrier) See T-carrier.
  10. T2 (carrier) See T-carrier.
  11. T3 (carrier) See T-carrier.
  12. T4 (carrier) See T-carrier.
  13. T5 (carrier) See T-carrier.
  14. Tactical Automatic Digital Switching System (TADSS) A transportable store-and-forward message-switching system used for rapid deployment in support of tactical forces.
  15. tactical command and control (C2) systems The equipment, communications, procedures, and personnel essential to a commander for planning, directing, coordinating, and controlling tactical…
  16. tactical communications Communications in which information of any kind, especially orders and decisions, are conveyed from one command, person, or place to another within the…
  17. tactical communications system A communications system that (a) is used within, or in direct support of, tactical forces, (b) is designed to meet the requirements of changing tactical…
  18. tactical data information link (TADIL) A standardized communications link, approved by the Joint Staff, that is suitable for transmission of digital information, and is characterized by…
  19. tactical data information link--A (TADIL--A) A netted link in which one unit acts as a net control station and interrogates each unit by roll call.
  20. tactical data information link--B (TADIL--B) A point-to-point data link between two units which provides for simultaneous transmission and reception of data (duplex).
  21. tactical load For the host service tactical forces, the total power requirements for communications, including the requirements for weapons, detection, command and…
  22. TADIL Tactical Digital Information Link.
  23. TADSS Acronym for Tactical Automatic Digital Switching System.
  24. tag See: label.
  25. tag image file format (TIFF) A file format used to store an image using the particular data structure of the file.
  26. TAI International Atomic Time.
  27. tail circuit A communications line from the end of a major transmission link, such as a microwave link, satellite link, or LAN, to the end-user location.
  28. tailgate To gain unauthorized physical access by following an authorized person through a controlled door. [2382-pt.8]
  29. tailing The in vitro addition, to the 3'-hydroxyl ends of a double-stranded DNA molecule, of multiple copies of a single nucleotide by the enzyme terminal…
  30. Take Under the Bald and Golden Eagle Protection Act, it means to pursue, shoot, shoot at, poison, wound, kill, capture, trap, collect, destroy, molest, or…
  31. takeoff angle Synonym departure angle.
  32. tampering In INFOSEC, penetration or modification of internal operations, or the insertion of active or passive tapping mechanisms, to determine the nature of, or…
  33. Tandem A pair in which one part follows the other.
  34. tandem area The general areas served by the local offices having direct trunks to or from the tandem office.
  35. tandem center In a switched public telecommunications network, a facility that connects trunks to trunks and does not connect any local loops.
  36. tandem circuit A general classification of circuits or trunks between a tandem central office unit and any other central office or switchboard. Synonym tandem trunk.
  37. tandem connection A call switched at a tandem office. [47 CFR Pt.36-A]
  38. tandem office A central office unit used primarily as an intermediate switching point for traffic between local central offices within the tandem area.
  39. tandem tie trunk network (TTTN) An arrangement that permits sequential connection of tie trunks between PBX and Centrex® locations by using tandem operation.
  40. tandem trunk Synonym tandem circuit.
  41. Tap To do damage to a monster, making it "your" kill. Once you have damaged the monster, you are the only one able to get experience and loot from it.
  42. tape relay A method of retransmitting TTY traffic from one channel to another, in which messages arriving on an incoming channel are recorded in the form of…
  43. tapered fiber An optical fiber in which the cross section, i.e., cross-sectional diameter or area, varies, i.e., increases or decreases, monotonically with length.
  44. Target In diagnostic tests, the molecule or nucleic acid sequence assayed in a sample.
  45. target access control decision information (target ADI) ADI associated with the target [10181-3].
  46. target access control information (target ACI) Access control information relating to the target [10181-3].
  47. target language In computing, data processing, and communications systems, a language into which statements are translated.
  48. target of evaluation 1. A product or system to be evaluated [CESG]. 2. An ITSEC system or product which is subject to security evaluation [ITSEC].
  49. tariff A tax on products imported from foreign countries.
  50. TASI Acronym for time-assignment speech interpolation.
  51. tasking See multitasking.
  52. TAT Technical Area Task.
  53. TCB Abbreviation for trusted computing base.
  54. TCB subset [FC Ver 1.0 Dec 1992] Set of software, firmware, and hardware (where any of these three could be absent) that mediates the access of a set S of subjects to a set O of objects…
  55. TCF Tactical Combat Force.
  56. TCP Transmission Control Protocol (Internet protocol).
  57. TCP/IP Transmission Control Protocol/Internet Protocol A collection of protocols that define the basic workings of the features of the Internet.
  58. TCP/IP Suite The suite of interrelated protocols associated with Transmission Control Protocol/Internet Protocol.
  59. TCS 1. Tactical Control System (USN term). 2. Time Critical System.
  60. TCU Towering cumulus clouds
  61. TDD Target Detection Device.
  62. TDM Time Division Multiplexed.
  63. TDMA Time Division Multiple Access ( TelComm /Computer term).
  64. TDMA (Time Division Multiple Access) Time Division Multiple Access (TDMA) is a second-generation modulation standard using bandwidth allocated in the 800 MHz, 900 MHz, and 1900MHz ranges.
  65. TE (1) Thermo-electric. (2) Test Engineer. (3) Training Element. (4) (BMC3) Test Exerciser.
  66. technical area In the military community, an area in which temperature, humidity, or access is controlled because it contains equipment, such as communications…
  67. technical control facility (TCF) A physical plant, or a designated and specially configured part thereof, that (a) contains the equipment necessary for ensuring fast, reliable, and secure…
  68. technical control hubbing repeater Synonym data conferencing repeater.
  69. technical load The portion of the operational load required for communications, tactical operations, and ancillary equipment including necessary lighting…
  70. technical security policy The set of laws, rules and practices regulating the processing of sensitive information and the use of resources by the hardware and software of an ITSEC…
  71. technical vulnerability In information handling, a hardware, software, or firmware weakness, or design deficiency, that leaves a system open to assault, harm, or unauthorized…
  72. TED Technology Exploitation Demonstration. 295
  73. tee coupler A passive coupler that has three ports. Synonyms directional coupler, splitter, T-coupler.
  74. TEK Abbreviation for traffic encryption key.
  75. teleaction service In Integrated Services Digital Network (ISDN) applications, a telecommunications service that uses very short messages with very low data transmission…
  76. telecommand The use of telecommunication for the transmission of signals to initiate, modify or terminate functions of equipment at a distance. [NTIA] [RR]
  77. telecommunication 1. Any transmission, emission, or reception of signs, signals, writing, images and sounds or intelligence of any nature by wire, radio, optical or other…
  78. telecommunication administration An administration, or the part of a combined postal and telecommunication administration, concerned with the provision of telecommunication service. [T1.
  79. telecommunication architecture See network architecture.
  80. telecommunication sector The sector that includes the telecommunications service providers, network operators, regulators, manufacturers, subscribers, and users. [After T1.
  81. telecommunications center See communications center.
  82. Telecommunications Device for the Deaf (TDD) A machine that uses typed input and output, usually with a visual text display, to enable individuals with hearing or speech impairments to communicate…
  83. telecommunications facilities The aggregate of equipment, such as radios, telephones, teletypewriters, facsimile equipment, data equipment, cables, and switches, used for providing…
  84. telecommunications infrastructure The organizations, personnel, procedures, facilities, and networks employed to transmit and receive information by electrical or electronic means.
  85. telecommunications link A communications facility or channel, including feeder and local distribution plant, having a termination in a center in the telecommunications network.
  86. telecommunications load equipment Equipment powered from a primary or secondary distribution of a centralized dc power system owned or operated by exchange and interexchange carriers.
  87. telecommunications management network (TMN) A network that interfaces with a telecommunications network at several points in order to receive information from, and to control the operation of, the…
  88. Telecommunications Relay Service (TRS) A free service that enables persons with TTYs, individuals who use sign language and people who have speech disabilities to use telephone services by…
  89. telecommunications security See communications security.
  90. telecommunications service Any service provided by a telecommunication provider. 2. A specified set of user-information transfer capabilities provided to a group of users by a…
  91. Telecommunications Service Priority (TSP) service A regulated service provided by a telecommunications provider, such as an operating telephone company or a carrier, for NS/EP telecommunications.
  92. Telecommunications Service Priority (TSP) system A system that provides a means for telecommunications users to obtain priority treatment from service providers for the NS/EP telecommunications…
  93. Telecommunications Service Priority (TSP) system user Any individual, organization, or activity that interacts with the NS/EP TSP System.
  94. telecommunications system See communications system.
  95. telecommunications system operator The organization responsible for providing telecommunications services to users.
  96. teleconference The live exchange of information among persons and machines remote from one another but linked by a telecommunications system.
  97. telegram Written matter intended to be transmitted by telegraphy for delivery to the addressee. This term also includes radiotelegrams unless otherwise specified.
  98. telegraph See telegraphy.
  99. telegraphy A form of telecommunication which is concerned in any process providing transmission and reproduction at a distance of documentary matter, such as written…
  100. telemetry 1. The use of telecommunication for automatically indicating or recording measurements at a distance from the measuring instrument. [RR] 2.