The TIA Glossary of Telecommunication Terms provides definitions and explanations for more than 5,800 engineering words and phrases in the ICT industry. Arranged alphabetically, and searchable by term, the glossary—originally based upon the Federal Standard 1037C Glossary of Technological Terms—is a dependable guide to unfamiliar vocabulary from “A” to “Zone of Silence.” Moreover, glossary items are cross-linked, so that unfamiliar terms in one definition are quickly accessible. And because it’s housed entirely online, the Glossary is available wherever an internet connection exists.
A telecommunications system service condition in which a user is completely deprived of service by the system. (188) Note: For a particular system or a given situation, an outage may be a service condition that is below a defined system operational threshold, i.e., below a threshold of acceptable performance. See outage threshold.