Technology terms starting with S

2,256 terms

  1. signaling destination point A signaling point to which a message is destined. [T1.226-1992]
  2. signaling end point A signaling point that can send or receive SS7 messages, and has no message transfer function. [T1.235-1993] 2.
  3. signaling information field The bits of a message signal unit that carry information particular to a certain user transaction and always contain a label. [T1.110-1987] [T1.226-1992]
  4. signaling link A transmission facility that consists of a signaling data link and its transfer control functions, used for reliable transfer of a signaling message.
  5. signaling link activation The process of making a signaling link ready to carry signaling traffic.
  6. signaling link blocking An event that causes the unavailability of a signaling link, typically consisting in a "processor outage" condition at one end of that signaling link. [T1.
  7. signaling link code 1. A field with certain signaling network management messages, which indicates the particular signaling link to which the message refers among those…
  8. signaling link deactivation The procedure by which a signaling link is taken out of service. [T1.110-1987]
  9. signaling link failure An event that causes the unavailability of a signaling link, typically consisting of a failure in signaling terminal equipment or in the signaling data…
  10. signaling link group A set of signaling links directly connecting two signaling points and having the same physical characteristic (bit rate, propagation delay, and the like).
  11. signaling link management function One of a group of functions that control and take actions when required to preserve integrity of locally connected signaling link sets.[T1.226-1992]
  12. signaling link restoration An event characterizing the completion of the initial alignment procedure on a signaling link following the removal of the previous causes of failure; in…
  13. signaling link selection (SLS) A field of the routing label that is typically used by the message routing function to perform load sharing among different signaling links n, or link…
  14. signaling link selection field A field of the routing label that is typically used by the message routing function to perform load sharing among different signaling links or link sets.
  15. signaling link set A set of signaling link(s) directly connecting two signaling points. [T1.110-1987]
  16. signaling message 1. An assembly of signaling information pertaining to a call that includes, but is not limited to, management transactions, that is transferred (between…
  17. signaling message discrimination At a given signaling point, the process that decides, for each incoming message, whether the signaling point is destination point or if it should act as…
  18. signaling message distribution The process of determining upon receipt of a signaling message at its destination point, to which user part the signaling message is to be delivered. [T1.
  19. signaling message handling functions Functions that, at the actual transfer of a message, direct the message to the proper signaling link or user part. [T1.
  20. signaling message route The signaling link or consecutive links connected in tandem that are used to convey a signaling message from an originating point to its destination point.
  21. signaling message routing The process for selecting, for each signaling message to be sent, the signaling link to be used. [T1.110-1987]
  22. signaling network A network used for signaling by one or more users and consisting of signaling points and connecting signaling links. [T1.110-1987] [T1.226-1992]
  23. signaling network functions The functions that are performed by the message transfer part at level 3 and are common to, and independent of, the operation of individual signaling…
  24. signaling network management (SNM) functions Functions that control the current message routing and configuration of signaling network facilities based on predetermined data and current information…
  25. signaling originating point A signaling point that is the source of a message. [T1.226-1992]
  26. signaling path In a transmission system, a path used for system control, synchronization, checking, signaling, and service signals used in system management and…
  27. signaling point A node in a signaling network that either originates and receives signaling messages, or transfers signaling messages from one signaling link to another…
  28. signaling point code A binary code uniquely identifying a signaling point in a signaling network. This code is used, according to its position in the label either as…
  29. signaling rate See data signaling rate.
  30. signaling route A predetermined path described by a succession of signaling points that may be traversed by signaling messages directly by a signaling point towards a…
  31. Signaling System No. 7 (SS7) A common-channel signaling system defined by the CCITT in the 1988 Blue Book, in Recommendations Q.771 through Q.774.
  32. signaling time slot In TDM carrier systems, a time slot starting at a particular phase or instant in each frame and allocated to the transmission of signaling (supervisory…
  33. signaling traffic flow control Actions and procedures intended to limit signaling traffic at its source in the case when the signaling network is not capable of transferring all…
  34. signaling traffic management functions Functions that control, and when necessary, modify, routing information used by message routing information to control the transfer of signaling traffic…
  35. signaling transfer point (STP) See signal transfer point.
  36. signaling transition See signal transition.
  37. signals intelligence (SIGINT) 1. A category of intelligence comprising, either individually or in combination, all communications intelligence, electronics intelligence, and foreign…
  38. signals security [A] generic term encompassing communications security and electronic security. [NIS]
  39. Signals Security (SIGSEC) The overall program for communication and electronic security.
  40. signatory The entity that generates a digital signature on data. [After X9.31]
  41. signatory authority In secure communications, an agreed entity (usually a third party) that issues signatory certificates to organizations participating in this authorization…
  42. signatory certificate In encryption, a certificate, issued by a signatory authority, that identifies the authorized signatories of an organization. [After X9.45]
  43. Signature See Certificate.
  44. Signature Certificate A public key certificate that contains a public key intended for verifying digital signatures rather than encrypting data or performing any other…
  45. Signature Dynamics A behavioral biometric modality that analyzes dynamic characteristics of an individual's signature, such as shape of signature, speed of signing, pen…
  46. SIGNATURE file A file you copy to the root directory of your storage device. The file contains a job ID, manifest file, and a signature.
  47. Signature Generation Uses a digital signature algorithm and a private key to generate a digital signature on data.
  48. Signature Histories A list of observed target signature characteristic parameter values as a function of missile flight time used for target discrimination and kill…
  49. Signature Line A set of 4 - 8 lines of text placed at the end of a mail message to provide the reader with the author's contact information, favorite quote, special of…
  50. Signature Verification Uses a digital signature algorithm and a public key to verify a digital signature.
  51. Signed Data Data on which a digital signature is generated.
  52. significant condition In the modulation of a carrier, one of the values of the signal parameter chosen to represent information.
  53. significant digit In a representation of a number, a digit that is needed for a given purpose; in particular, a digit that must be kept to preserve a given accuracy or a…
  54. significant instant In a signal, any instant at which a significant condition of a signal begins or ends.
  55. significant interval The time interval between two consecutive significant instants.
  56. signing An advanced security feature that verifies the sender's identity and verifies that the message hasn't been modified during transit. [Exchange 5.5]
  57. SIGSEC Signals Security.
  58. SIIPT System Integration Integrated Product Team (THAAD Program term).
  59. SIL A general term for the abnormal growth of squamous cells on the surface of the cervix.
  60. silence code In digital telephony, a code composed of a reserved binary number that is sent instead of an actual sound sample value from the CODEC when the incoming…
  61. silent interval Any portion of a ringing cycle during which the ringing signal is not being applied. [T1.401-1998]
  62. silent zone Synonym skip zone.
  63. silica (SILL-uh-kuh): A substance found in rocks, sand, and quartz as well as some workplaces.
  64. silicon dioxide (SiO2) See silica.
  65. silicon photodiode A silicon-based PN- or PIN-junction photodiode. Note 1: Such photodiodes are useful for direct detection of optical wavelengths shorter than approximately…
  66. Silo an alternative name for an Automated Cartridge System. See ACS.
  67. silver halide microfilm Archival quality polyester-based film containing images produced by exposure of light sensitive silver halide crystals suspended in a gelatin emulsion See…
  68. SIM Simulation.
  69. SIM (Subscriber Identity Module) A Subscriber Identity Module (SIM) is a stripped-down smart card containing information about the identity of a cell-phone subscriber, and subscriber…
  70. Similarity Score A value returned by a biometric algorithm that indicates the degree of similarity or correlation between a biometric sample and a reference.
  71. Similarity searching The ability to search for similar documents. Similar in a search context may be similar to a document in a result set or similar to an example document.
  72. SIMM Second In-line Memory Module.
  73. Simple API for XML An event-driven interface in which the parser invokes one of several methods supplied by the caller when a parsing event occurs.
  74. simple authentication Authentication by means of simple password arrangements. [After X.509]
  75. Simple Authentication and Security Layer (SASL) An open framework, described in Request for Comments (RFC) 2222, for adding authentication support to connection-based protocols.
  76. simple buffering The assigning of buffer storage for the duration of the execution of a computer program.
  77. Simple Mail Transfer Protocol See SMTP.
  78. Simple Network Management Protocol (SNMP) A standard Internet protocol that facilitates communications between a system being managed and the management console or framework.
  79. simple scanning In facsimile transmission, scanning using only one spot at a time.
  80. Simple Security Condition A Bell- LaPadula security model rule allowing a subject read access to an object only if the security level of the subject dominates the security level of…
  81. simple security property [The] Bell-La Padula security model rule allowing a subject read access to an object, only if the security level of the subject dominates the security…
  82. Simple Storage Service (S3) A storage web service that provide storage through web services interfaces such as REST, SOAP and BitTorrent.
  83. SimpleDB A flexible distributed database writen in Erlang that stores data and serves users’ requests.
  84. simplex (SX) signaling Signaling in which two conductors are used for a single channel, and a center-tapped coil, or its equivalent, is used to split the signaling current…
  85. simplex circuit A circuit that provides transmission in one direction only. 2. Deprecated definition: A circuit using ground return and affording communication in either…
  86. simplex operation Operation in which transmission occurs in one and only one preassigned direction. Synonym one-way operation.
  87. simplex protocol A communications protocol that is purely one-way, and where acknowledgments are not part of any application protocol.
  88. SIMS Security Information Management System.
  89. simulate To represent certain features of the behavior of a physical or abstract system by the behavior of another system.
  90. Simulation In cancer treatment, a process used to plan radiation therapy so that the target area is precisely located and marked.
  91. Simulator A generic term used to describe a family of equipment used to represent threat weapon systems in development testing, operational testing, and training.
  92. simultaneous multithreading similar to time-slice multithreading (superthreading), except that the multiple threads introduced into the pipelines on a given clock cycle can be from…
  93. SINAD Abbreviation for signal-plus-noise-plus-distortion to noise-plus-distortion ratio. 1. The ratio of (a) total received power, i.e.
  94. SINCGARS Single-Channel and Airborne Radio System.
  95. singing An undesired self-sustained audio oscillation in a circuit. Note: Singing is usually caused by positive feedback, excessive gain, or unbalance of a hybrid…
  96. singing margin The difference in power levels between the singing point and the operating gain of a system or component.
  97. singing point The threshold point at which additional gain in the system will cause self-oscillation.
  98. Singing Return Loss (High & Low) The term "Singing Return Loss" denotes the frequency weighted measure of return loss at the edges of the voice band, where singing (instability) problems…
  99. single class Comprising or containing only one security class [CESG].
  100. single class device A device which can only be used to process information of a single security class at a time [CESG]