- Industry: Telecommunications
- Number of terms: 29235
- Number of blossaries: 0
- Company Profile:
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.
Equipment that provides a timing signal whose long-term accuracy is maintained at 1 x 10-11 or better with verification to Coordinated Universal Time (UTC,) and whose timing signal may be used as the basis of reference for the control of other clocks within a network. The primary reference source may generate a timing signal completely autonomous of other references, in which case cesium beam technology is suitable. Alternatively, the primary reference source may not be a completely autonomous implementation, in which case it may employ direct control from normal UTC-derived frequency and time services. Not to be confused with primary time standard, primary frequency standard.
Industry:Telecommunications
Equipment that provides limited security for unclassified voice communications.
Industry:Telecommunications
Equipment that switches or modifies voltage, frequency, or other characteristics of primary power.
Industry:Telecommunications
Equipment that transforms signals derived from frequency-division multiplex equipment, such as group or supergroups, to time-division-multiplexed signals having the same structure as those derived from PCM multiplex equipment, such as primary or secondary PCM multiplex signals, and vice versa.
Industry:Telecommunications
Equipment used by more than one system, subsystem, component, or other equipment, such as a channel or switch.
Industry:Telecommunications
Equipment used for routing messages over common-user circuits that interconnect a source data terminal equipment (DTE) to a sink DTE for information interchange.
Industry:Telecommunications
Equipment used to input into or receive output from the telecommunications network.
Industry:Telecommunications
Error control for data transmission in which the receiver detects transmission errors in a message and automatically requests a retransmission from the transmitter. Note: Usually, when the transmitter receives the ARQ, the transmitter retransmits the message until it is either correctly received or the error persists beyond a predetermined number of retransmissions. Synonyms error-detecting-and-feedback system, repeat-request system.
Industry:Telecommunications
Errors distributed over the signal in time so that they can be considered statistically independent from each other.
Industry:Telecommunications
