call signal
81Busy signal — For other uses, see Busy signal (disambiguation). A busy signal (or busy tone or engaged tone) in telephony is an audible or visual signal to the calling party that indicates failure to complete the requested connection of that particular… …
82First call — is a bugle call with three distinct meanings.At a horse race, where the tune is also known as the Call to the Post, it is a signal that all mounts should be at the starting gate because the race is about to begin. The tune is usually sounded by a …
83Digital signal processing — (DSP) is concerned with the representation of discrete time signals by a sequence of numbers or symbols and the processing of these signals. Digital signal processing and analog signal processing are subfields of signal processing. DSP includes… …
8411th Signal Brigade (United States) — Infobox Military Unit unit name= 11th Signal Brigade caption= 11th Signal Brigade Insignia dates= N/A country= United States allegiance= branch= United States Army type= Communications role= EAC Communications size= command structure= Army Signal …
85Traffic signal preemption — is a type of system that allows the normal operation of traffic lights to be preempted, often to assist emergency vehicles.[1][2] The most common use of these systems is to manipulate traffic signals in the path of an emergency vehicle, stopping… …
86Aviation Section, U.S. Signal Corps — The Aviation Section, U.S. Signal Corps, was the name of the military aviation service of the United States Army from 1914 to 1918, and a direct ancestor of the United States Air Force. It replaced the Aeronautical Division, U.S. Signal Corps and …
87Time signal — These automatic signal clocks were synchronized by telegraphy in 1905 before the widespread use of radio A time signal is a visible, audible, mechanical, or electronic signal used as a reference to determine the time of day. Contents 1 Audible… …
88National Do Not Call List — This article is about Canada s National Do Not Call List. For similar registries in other countries, see Do not call list (disambiguation). The Canadian National Do Not Call List logo. The National Do Not Call List (DNCL) allows residents of… …
89bugle call — noun a signal broadcast by the sound of a bugle • Hypernyms: ↑signal, ↑signaling, ↑sign • Hyponyms: ↑recall, ↑taps, ↑lights out, ↑reveille, ↑ …
90Last call (bar term) — In a pub, a last call is an made shortly before the bar closes for the night, urging the to buy one last drink. There are various means to make this signal, like ringing a bell, flashing the lights, or announcing orally. In the UK it is called… …
