Telecommunications terms starting with R

465 terms

  1. rise time In the approximation of a step function, the time required for a signal to change from a specified low value to a specified high value.
  2. Risk The possibility of loss; the uncertainty of future returns.
  3. risk acceptance A managerial decision to accept a certain degree of risk, usually for technical or cost reasons. [2382-pt.8]
  4. risk analysis A process consisting of three components: risk assessment, risk management and risk communication performed to understand the nature of unwanted, negative…
  5. risk assessment a scientifically based process consisting of the following steps: i) hazard identification; ii) hazard characterization; iii) exposure assessment; and iv)…
  6. risk index [The] difference between the minimum clearance or authorization of information system (IS) users and the maximum sensitivity (e.g.
  7. risk management The process, distinct from risk assessment, of weighing policy alternatives, in consultation with all interested parties, considering risk assessment and…
  8. RJ Abbreviation for registered jack.
  9. RJE Abbreviation for remote job entry.
  10. rms pulse duration See root-mean-square pulse duration.
  11. RO Receiving Office - the national Office or the intergovernmental organization with which an international application has been filed.
  12. roaming In cellular technology (mobile telephone technology), the use of a wireless telephone outside a specified tariffed geographic area defined by the service…
  13. Robot Any browser program which follows hypertext links and accesses web pages but is not directly under human control...
  14. robotic librarian Synonym droid.
  15. role See site group.
  16. ROM Read Only Memory - the hardware in a computer that that can be read but not written to.
  17. roofing filter A low-pass filter used to reduce unwanted higher frequencies.
  18. room noise level Synonym ambient noise level.
  19. room preset In multimedia and virtual reality, information that may be used to select a video source, and then control the video source to provide the desired view.
  20. root To trap a target in place/stuck using a "root" type spell such as Entangling Roots.
  21. root-mean-square (rms) deviation A single quantity, rms, characterizing a function, f(x), given by Note: The term "rms deviation" is also used in probability and statistics, where the…
  22. root-mean-square (rms) pulse broadening The temporal rms deviation of the impulse response of a system.
  23. root-mean-square (rms) pulse duration A special case of root-mean-square deviation where the independent variable is time and f(t) describes the pulse waveform.
  24. rope lay conductor A conductor composed of a central core surrounded by one or more layers of helically wound groups of wires.
  25. rotary dial A signaling mechanism--usually incorporated within a telephone set--that when rotated and released, generates dc pulses required for establishing a…
  26. rotary hunting Hunting in which all the numbers in the hunt group are selected in a prescribed order.
  27. rotary switching In telephone systems, an electro-mechanical switching method whereby the selecting mechanism consists of a rotating element using several groups of…
  28. rotational position sensing [In magnetic media,] A technique used to locate a given sector, a desired track, and a specific record by continuous comparison of the read/write head…
  29. round-trip delay time The elapsed time for transit of a signal over a closed circuit. Note: Round-trip delay time is significant in systems that require two-way interactive…
  30. rounding Deleting the least-significant digits of a number and applying some rule of correction to the part retained. [After SMPTE]
  31. route A route of administration is a way of administering a drug to a site in a patient.
  32. route diversity The allocation of circuits between two points over more than one geographic or physical route with no geographic points in common.
  33. route index A pointer to a specific trunk group. [T1.667-1999]
  34. route list A specific list of trunk groups. [After T1.667-1999]
  35. route matrix In communications network operations, a record that indicates the interconnections between pairs of nodes in the network, and is used to produce direct…
  36. route verification Procedures that permit a signaling point to determine the accuracy and consistency of its routing data by sending a test message and analyzing the…
  37. Router A piece of hardware that forwards data packets between two or more networks.
  38. routine A computer program, called by another program, that may have some general or frequent use.
  39. routine message A category of precedence to be used for all types of messages that justify transmission by rapid means unless of sufficient urgency to require a higher…
  40. Routing The methods of predicting the attenuation of a flood wave as it moves down the course of a river.
  41. routing address Synonym routing number, routing table.
  42. routing control The application of rules during the process of routing so as to chose or avoid specific networks, links or relays [7498-2].
  43. routing diagram In a communications system, a diagram that (a) shows all links between all switchboards, exchanges, switching centers, and stations in the system, such as…
  44. routing directory See routing table.
  45. routing indicator (RI) A group of letters assigned to indicate: (a) the geographic location of a station; (b) a fixed headquarters of a command, activity, or unit at a…
  46. routing label The part of the message label that is used for message routing in the signaling network.
  47. routing number Synonym routing address, routing table.
  48. routing protocol In an internet, a service protocol that is used (by routers, but not by hosts) to maintain routing tables; routing protocols are classified as either (a)…
  49. routing table Contains information that the MTA needs to route messages. [Exchange 5.5]
  50. RQ Abbreviation for repeat-request. See ARQ.
  51. RSA (Rivest-Shamir-Adleman) RSA is a public key encryption method RSA are the initials of the developers of the algorithm which was done at taxpayer expense.
  52. RSAREF This is the free library RSA Data Security, Inc., made available for the purpose of implementing freeware PEM applications.
  53. RSL Abbreviation for received signal level.
  54. RTA Abbreviation for remote trunk arrangement.
  55. RTTY Abbreviation for radio teletypewriter.
  56. rubidium clock A clock containing a quartz oscillator stabilized by a rubidium standard.
  57. rubidium standard A frequency standard in which a specified hyperfine transition of electrons in rubidium-87 atoms is used to control the output frequency.
  58. Rule-Based Security Policy A security policy based on global rules imposed for all subjects. These rules usually rely on a comparison of the sensitivity of the objects being…
  59. Run Seasonal upstream migration of anadromous fish. One or more lengths of pipe that continue in a straight line.
  60. run-length encoding A data compression technique for storing raster or gridded data. Run-length encoding stores data by row.
  61. rural radio service A public radio service rendered by fixed stations on frequencies below 1000 MHz used to provide (1) Basic Exchange Telecommunications Radio Service, which…
  62. rural subscriber station A fixed station in the rural radio service used by a subscriber for communication within a central office station. 2.
  63. RWI Abbreviation for radio and wire integration.
  64. RX (1) Receive. (2) Receiver. 253
  65. RZ Abbreviation for return-to-zero.