Ключевые слова: answer, bell, business, button, cable, call, caller, communicate, communication, connect, connection, contemporary, device, dial, dialing, digital, display, electrical, electronic, equipment, handset, headphone, headset, intercom, isolated, keyboard, keypad, line, liquidcrystal, message, microphone, modern, number, office, phone, receiver, ring, ringing, service, speak, speaker, spiral, support, talk, talking, technology, telecommunication, telephone, transceiver, voice,