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On analog telephone lines with special services, a flash or register-recall signal is a brief disconnection of the local loop circuit, used to control functions on the public telephone exchange, PBX or VoIP ATA.
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Explore the main themes, entities and connections around Hook flash. Start with the topic map, then use the sections below for research and deeper semantic analysis.
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flash call hook telephone systems used button dial switch phone tone user analog signal similar european line circuit calls functions
| Subject | Predicate | Object | Confidence | Src |
|---|---|---|---|---|
| crossbar or reed relay | instance of | using technology | 0.80 | text |
| the register was often a system of analog electronics or even relay logic.The terms flash | instance of | using technology | 0.80 | text |
| hook flash are commonly used in North America | instance of | using technology | 0.80 | text |
| while in Europe a similar signal is referred to as a register-recall or | instance of | using technology | 0.80 | text |
| more commonly | instance of | using technology | 0.80 | text |
| recall or simply the | instance of | using technology | 0.80 | text |
| software control | instance of | or by any other means | 0.80 | text |
These clusters group vocabulary that occurs around closely connected concepts in the source material.
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