Ключевые слова: 3039 years, 6069 years, american, answering, asking, business, businessman, casual, caucasian ethnicity, communication, computer, discussion, distant, entrepreneur, european people, human face, indoors, internet, listening, male, man, meeting, negotiation, office, old, one man only, one woman only, senior, talking, technology, time, two person, video, video conference, webcam, white people, woman,