Synonyms for Telephone (same or very similar meaning)
WordNet sense 1 (transmitting speech at a distance):
telephony
WordNet sense 2 (electronic equipment that converts sound into electrical signals that can be transmitted over distances and then converts received signals back into sounds):
phone, telephone set
WordNet sense 3 (get or try to get into communication (with someone) by telephone):
call, ring, call up
From the ODE community, based on WordNet
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