Relaciones entre ansiedad social y rasgos, estilos y trastornos de la ... by Caballo, Vicente E.; Salazar, Isabel C.; Irurtia, Maria Jesus; Benito Arias; Guillen, Jose Luis / Behavioral Psychology/Psicologia Conductual.
Dictaphone was prominent in the provision of multi-channel recorders, used extensively in the emergency services to record emergency telephone calls (to numbers such as 911, 999, 112) and subsequent conversations.
Comparison of an amateur radio handheld transceiver, cell phone, and matchbox. A radiotelephone (or radiophone) is a communications system for transmission of speech over radio. Radiotelephone systems are not necessarily interconnected with the public land line telephone network. Radiotelephony means transmission of sound (audio) by radio, in contrast to radiotelegraphy (transmission of telegraph signals) or video transmission.