Ключевые слова: answer, background, beep, black, business, busy, button, cable, call, closeup, communication, connection, conversation, device, dial, digital, electronic, equipment, gray, handset, hear, home, international, isolated, key, keypad, lifted handset, line, lines, long distance, modern, network, number, object, office, phone, plastic, pulse, service, speak, technology, telecommunication, telephone, tone, typeset, urban, waiting, white, wired,