In communication, a code word is an element of a standardized code or protocol. Each code word is assembled in accordance with the specific rules of the code and assigned a unique meaning. Code words are typically used for reasons of reliability, clarity, brevity, or secrecy.
In telecommunication, the term communications deception has the following meanings:
- Deliberate transmission, retransmission, or alteration of communications to mislead an adversary's interpretation of the communications.
- Use of devices, operations, and techniques with the intent of confusing or misleading the user of a communications link or a navigation system.
Communications security is the discipline of preventing unauthorized interceptors from accessing telecommunications in an intelligible form, while still delivering content to the intended recipients.
In telecommunication, a cord circuit is a switchboard circuit in which a plug-terminated cord is used to establish connections manually between user lines or between trunks and user lines. A number of cord circuits are furnished as part of the switchboard position equipment. The cords may be referred to as front cord and rear cord or trunk cord and station cord. In modern cordless switchboards, the cord-circuit function is switch operated and may be programmable.
In telecommunication, a cryptochannel is a complete system of crypto-communications between two or more holders. It includes: (a) the cryptographic aids prescribed; (b) the holders thereof; (c) the indicators or other means of identification; (d) the area or areas in which effective; (e) the special purpose, if any, for which provided; and (f) pertinent notes as to distribution, usage, etc. A cryptochannel is analogous to a radio circuit.
In telecommunication a data link is the means of connecting one location to another for the purpose of transmitting and receiving digital information. It can also refer to a set of electronics assemblies, consisting of a transmitter and a receiver and the interconnecting data telecommunication circuit. These are governed by a link protocol enabling digital data to be transferred from a data source to a data sink.
In telecommunication, a demand assignment is a method which several users share access to a communication channel on a real-time basis, i.e., a user needing to communicate with another user on the same network requests the required circuit, uses it, and when the call is finished, the circuit is released, making the circuit available to other users.
Electro-optics is a branch of electrical engineering, electronic engineering, materials science, and material physics involving components, devices and systems which operate by the propagation and interaction of light with various tailored materials. It is essentially the same as what is popularly described today as photonics. It is not only concerned with the "Electro-Optic effect". Thus it concerns the interaction between the electromagnetic (optical) and the electrical (electronic) states of materials.
Loading characteristic: In multichannel telephone systems, a plot, for the busy hour, of the equivalent mean power and the peak power as a function of the number of voice channels.
In telecommunication, the term long-haul communications has the following meanings:
In telecommunication, a one-way trunk is a trunk between two switching centers, over which traffic may be originated from one preassigned location only.
An optical axis is a line along which there is some degree of rotational symmetry in an optical system such as a camera lens or microscope.
Packet-switching node: In a packet-switching network, a node that contains data switches and equipment for controlling, formatting, transmitting, routing, and receiving data packets.
Title 47 CFR Part 68 is a section of the Code of Federal Regulations of the United States that regulate the direct electrical connection of telecommunications equipment and customer premises wiring with the public switched telephone network, certain private line services, and connection of private branch exchange (PBX) equipment to certain telecommunication interfaces.
In telecommunication, the term power failure transfer has the following meanings:
- The switching of primary utilities to their secondary backup whenever the primary source operates outside its design parameters. This is accomplished via a transfer switch.
- In telephony, a function which, when activated in the event of a commercial power failure or a low-voltage battery condition at a subscriber location, supplies power to predesignated subscriber equipment via the central office trunk.
Separate-channel signaling is a form of signaling in which the whole or a part of one or more channels in a multichannel system is used to provide for supervisory and control signals for the message traffic channels.
In telecommunication, a toll switching trunk or toll connecting trunk is a trunk connecting one or more end offices to a toll center as the first stage of concentration for intertoll or long distance traffic.
Wink is used both in connection with DC signaling on a trunk, and with indicator lamps on a key telephone.
This timeline of artificial satellites and space probes includes unmanned spacecraft including technology demonstrators, observatories, lunar probes, and interplanetary probes. First satellites from each country are included. Not included are most earth science satellites, commercial satellites or manned missions.
Part of the United States Department of Defense acquisition process, the Joint Requirements Oversight Council (JROC) reviews programs designated as JROC interest and supports the acquisition review process in accordance with law. The JROC accomplishes this by reviewing and validating all Joint Capabilities Integration and Development System documents for Acquisition Category I and IA programs, and other programs designated as high-interest. For Acquisition Category ID and IAM programs, the JROC makes recommendations to the Defense Acquisition Board or Information Technology Acquisition Board, based on such reviews. The JROC is chaired by the Vice Chairman of the Joint Chiefs of Staff, who also serves as the co-chair of the Defense Acquisition Board. The other JROC members are the Vice Chiefs of each military service: Vice Chief of Staff of the Army, Assistant Commandant of the Marine Corps, Vice Chief of Naval Operations and Vice Chief of Staff of the Air Force.
