- 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.
Trunk: A trunk experiencing a much higher then normal rate of failure or switching irregularities, over a period of time, with resulting high incidence of test O. K. Or no trouble found.
Industry:Telecommunications
Two interrelated protocols that are part of the Internet protocol suite. Note 1: TCP operates on the OSI Transport Layer and breaks data into packets. IP operates on the OSI Network Layer and routes packets. Note 2: TCP/IP was originally developed by the U. S. Department of Defense.
Industry:Telecommunications
When applied to privilege: a privilege that is active, i.e., has its effective flag set.
Industry:Telecommunications
When applied to privilege: a privilege that is inactive, i.e., has its effective flag cleared.
Industry:Telecommunications
Within the Internet, an accessible facility or entity that contains information or provides data-processing capabilities. Note: An example of an Internet resource is a Web server.
Industry:Telecommunications
Time scale based on the second (SI,) as defined and recommended by the CCIR, and maintained by the Bureau International des Poids et Mesures (BIPM. ) For most practical purposes associated with the Radio Regulations, UTC is equivalent to mean solar time at the prime meridian (0° longitude,) formerly expressed in GMT. Note 1: The maintenance by BIPM includes coordinating inputs from time standards belonging to various national laboratories around the world, which inputs are averaged to create the international time standard (second. ) Note 2: The full definition of UTC is contained in CCIR Recommendation 460-4. Note 3: The second was formerly defined in terms of astronomical phenomena. When this practice was abandoned in order to take advantage of atomic resonance phenomena ("atomic time") to define the second more precisely, it became necessary to make occasional adjustments in the "atomic" time scale to coordinate it with the workaday mean solar time scale, UT-1, which is based on the somewhat irregular rotation of the Earth. Rotational irregularities usually result in a net decrease in the Earth's average rotational velocity, and ensuing lags of UT-1 with respect to UTC. Note 4: Adjustments to the atomic, i.e., UTC, time scale consist of an occasional addition or deletion of one full second, which is called a leap second. Twice yearly, during the last minute of the day of June 30 and December 31, Universal Time, adjustments may be made to ensure that the accumulated difference between UTC and UT-1 will not exceed 0. 9 s before the next scheduled adjustment. Historically, adjustments, when necessary, have usually consisted of adding an extra second to the UTC time scale in order to allow the rotation of the Earth to "catch up. " Therefore, the last minute of the UTC time scale, on the day when an adjustment is made, will have 61 seconds. Synonyms World Time, Z Time, Zulu Time.
Industry:Telecommunications
Thousands-block number pooling is a process by which the 10,000 numbers in a central office code (NXX) are separated into ten sequential blocks of 1,000 numbers each (thousands-blocks,) and allocated separately within a rate center (FCC 00-104 §52. 20 (a). )
Industry:Telecommunications
Those portions of the TCB whose normal function is to deal with the control of access between subjects and objects.
Industry:Telecommunications
Those NS/EP telecommunications services utilizing public switched networks. Note: Public switched NS/EP telecommunication services may include both interexchange and intraexchange network facilities (e.g., switching systems, interoffice trunks, and subscriber loops. )
Industry:Telecommunications
