- Industrie: Telecommunications
- Number of terms: 29235
- Number of blossaries: 0
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ATIS is the leading technical planning and standards development organization committed to the rapid development of global, market-driven standards for the information, entertainment and communications industry.
To generate new frequencies by mixing two or more signals in a nonlinear device such as a vacuum tube, transistor, or diode mixer. Note: A superheterodyne receiver converts any selected incoming frequency by heterodyne action to a common intermediate frequency where amplification and selectivity (filtering) are provided. 2. A frequency produced by mixing two or more signals in a nonlinear device.
Industry:Telecommunications
The termination of user information transfer between a source user and a destination user in response to a disengagement request. Note: Successful disengagement occurs at the earliest moment at which either user is able to initiate a new information transfer transaction.
Industry:Telecommunications
The tendency of alternating current to flow near the surface of a conductor, thereby restricting the current to a small part of the total cross-sectional area and increasing the resistance to the flow of current. Note: The skin effect is caused by the self-inductance of the conductor, which causes an increase in the inductive reactance at high frequencies, thus forcing the carriers, i.e., electrons, toward the surface of the conductor. At high frequencies, the circumference is the preferred criterion for predicting resistance than is the cross-sectional area. The depth of penetration of current can be very small compared to the diameter.
Industry:Telecommunications
The system of coding that is used to create or navigate hypermedia in a nonsequential manner.
Industry:Telecommunications
With respect to magnetically recorded data, especially tape-recorded data (analog or digital,) the unintentional transfer of data from one physical location to another by virtue of prolonged, intimate physical contact of the recording media. Note 1: Print-through is probably most commonly encountered when magnetic tape, stored on reels (including cassettes,) is left for prolonged periods without being intentionally disturbed. Data (magnetic disturbances) may then be transferred between layers of tape. Note 2: The effects of print-through may, in the case of magnetic tapes, be minimized by rewinding them at timely intervals. Note 3: The effects of print-through are most serious in analog recordings. Digital recordings may be equally affected in terms of the magnitude of the disturbance caused by print-through, but its effects may usually be eliminated altogether and the original data recovered essentially without errors. This may be accomplished by the simple expedient of reading the data from the affected medium, e.g., tape, with the threshold for declaring a "one" or "mark" being above the level that is manifest from print-through, and re-recording the data onto a clean recording medium. Analog recordings may not be so treated because there is no prior knowledge of the structure of the recorded signal.
Industry:Telecommunications
To restrict communication in both directions with a participant of the conference.
Industry:Telecommunications
To stop a telephone call directed to an improper, disconnected, or restricted telephone number, and to redirect that call to an operator or a recording. 2. To gain possession of communications intended for others without their consent, and, ordinarily, without delaying or preventing the transmission. Note: An intercept may be an authorized or unauthorized action. 3. The acquisition of a transmitted signal with the intent of delaying or eliminating receipt of that signal by the intended destination user. 4. A call disposition category for a call attempt to a non-operating number.
Industry:Telecommunications
The use of a single wideband, i.e., high-capacity, facility to create many relatively narrowband, i.e., lower capacity, channels by subdividing the wideband facility.
Industry:Telecommunications
The short-term variations between the optimum sampling instants of a digital signal and the sampling clock derived from it.
Industry:Telecommunications
The software that accesses the X. 500 directory service on behalf of the directory user. Note: The directory user may be a person or another software element.
Industry:Telecommunications
