- 行业: 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.
A category of precedence reserved for messages relating to situations that gravely affect the security of national/allied forces or populace and that require immediate delivery to the addressee (s. )
Industry:Telecommunications
A category of precedence reserved for messages that require expeditious action by the addressee (s) and/or furnish essential information for the conduct of operations in progress when routine precedence will not suffice.
Industry:Telecommunications
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 precedence.
Industry:Telecommunications
A cell identified by a standardized virtual path identifier (VPI) and virtual channel identifier (VCI) value, which has been generated and does not carry information from an application using the ATM Layer service.
Industry:Telecommunications
A central control device required by some networks (e.g., LANs or MANs) to provide such centralized functions as remodulation, retiming, message accountability, contention control, diagnostic control, and access to a gateway. 2. A control center of a CATV system, where incoming signals are amplified, converted, processed, and combined into a common cable for transmission to customers. The headend usually includes antennas, preamplifiers, frequency converters, demodulators, modulators, processors, and other related equipment. Synonym cable headend.
Industry:Telecommunications
A central office at which user lines and trunks are interconnected. Synonym end exchange.
Industry:Telecommunications
A Central Office code assigned by the CO Code Administrator and implemented in the PSTN for specific routing and rating requirements as of the LERG Routing Guide effective date.
Industry:Telecommunications
A central office or similar facility's ability to maintain continuity of operations without any operationally significant interruption of service from either hardware or software failures in the presence of one or more HEMP (high-altitude electromagnetic pulse) events.
Industry:Telecommunications
A central office unit used primarily as an intermediate switching point for traffic between local central offices within the tandem area. Where qualified by a modifying expression, or other explanation, this term may be applied to an office employed for both the interconnection of local central offices within the tandem area and for the interconnection of these local offices with other central offices, e.g., long haul tandem office.
Industry:Telecommunications
A central office used primarily for supervising and switching toll traffic.
Industry:Telecommunications
