Ключевые слова: african, african american, agent, american, business, businesswoman, call, caucasian, center, centre, client, colleague, communication, computer, contact, customer, employee, female, girl, happy, head, headphone, headset, home, indoor, internet, male, man, mobile phone, multiethnic, office, online, operator, person, phone, portrait, selective focus, service, sitting, smartphone, smile, support, talking, team, telephone, using, woman, worker, workplace, young,