Attention so far has focused on two forms of communication: Voice, in which the spoken word is carried by the system; and message services, in which the written or printed word is carried. In most developed countries the growth in the availability and use of the telephone in recent decades has been explosive, and for a time many European administrations were unable to meet public demand. The use of telecommunications for person-to-person and other forms of voice communication will continue to increase, but in most Western countries, at least, the very high rates of growth have waned.
KeywordsExplosive Smoke Production Line
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