- 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.
Abbreviation for Extended Industry Standard Architecture. A 32-bit bus standard that supports the features of microchannel architecture and that requires a special card for 32-bit operations, while maintaining compatibility with the older ISA (Industry Standard Architecture. )
Industry:Telecommunications
Abbreviation for Federal Telecommunications System. A contract to provide a consolidated telecommunications capability to support Federal agencies with voice and data services (including local, long-distance, and international services) that can endure if the public switched network is congested or otherwise incapacitated. The FTS2000 contract was renegotiated for the FTS2001 contract to take advantage of pricing structures and unbundling rulings.
Industry:Telecommunications
Abbreviation for Government Emergency Telecommunications Service (GETS. )
Industry:Telecommunications
Abbreviation for International Telegraph and Telephone Consultative Committee; a predecessor organization of the ITU-T.
Industry:Telecommunications
Abbreviation for Internet service provider. A company or organization that provides connections to the Internet to companies or individuals via dial-up, ISDN, yyT1, or other connection.
Industry:Telecommunications
Abbreviation for Internet service provider. A company or organization that provides connections to the Internet to companies or individuals via dial-up, ISDN, yyT1, or other connection.
Industry:Telecommunications
Abbreviation for modified alternate mark inversion code. A T-carrier AMI line code in which bipolar violations may be deliberately inserted to maintain system synchronization. Note 1: The clock rate of an incoming T-carrier signal is extracted from its bipolar line code. T-carrier was originally developed for voice applications. When voice signals are digitized for transmission via T-carrier, there is no problem in maintaining system synchronization, because of the nature of the digitized signals. However, when used for the transmission of digital data, the conventional AMI line code may fail to have sufficient marks, i.e., "1's," to permit recovery of the incoming clock, and synchronization is lost. This happens when there are too many consecutive zeros in the user data being transported. To prevent loss of synchronization when a long string of zeros is present in the user data, deliberate bipolar violations are inserted into the line code, to create a sufficient number of marks to maintain synchronization. The receive terminal equipment recognizes the bipolar violations and removes from the user data the marks attributable to the bipolar violations. Note 2: The exact pattern of bipolar violations that is transmitted in any given case depends on the line rate and the polarity of the last valid mark in the user data prior to the unacceptably long string of zeros. Note 3: The number of consecutive zeros that can be tolerated in user data depends on the data rate, i.e., the level of the line code in the T-carrier hierarchy. The North American T1 line code (1. 544 Mb/s) does not use bipolar violations. The European T1 line code (2. 048 Mb/s) may use bipolar violations when 8 or more consecutive zeros are present. This line code is called bipolar with eight-zero substitution (B8ZS. ) (In all levels of the European T-carrier hierarchy, the patterns of bipolar violations that are used differ from those used in the North American hierarchy. ) At the North American T2 rate (6. 312 Mb/s,) bipolar violations are inserted if 6 or more consecutive zeros occur. This line code is called bipolar with six-zero substitution (B6ZS. ) At the North American T3 rate (44. 736 Mb/s,) bipolar violations are inserted if 3 or more consecutive zeros occur. This line code is called "bipolar with three-zero substitution" (B3ZS. )
Industry:Telecommunications
Abbreviation for multipoint junction unit. Equipment used by the service provider to perform the bridging functions for multipoint service.
Industry:Telecommunications
Abbreviation for National Security or Emergency Preparedness telecommunications. Telecommunications services that are used to maintain a state of readiness or to respond to and manage any event or crisis (local, national, or international) that causes or could cause injury or harm to the population, damage to or loss of property, or degrade or threaten the national security or emergency preparedness posture of the United States.
Industry:Telecommunications
Abbreviation for National Security or Emergency Preparedness telecommunications. Telecommunications services that are used to maintain a state of readiness or to respond to and manage any event or crisis (local, national, or international) that causes or could cause injury or harm to the population, damage to or loss of property, or degrade or threaten the national security or emergency preparedness posture of the United States.
Industry:Telecommunications
