Ключевые слова: background, black, business, call, center, centre, computer, contact, customer, desk, desktop, device, equipment, global, headset, help, helpdesk, helpline, internet, isolated, keyboard, laptop, marketing, microphone, office, operator, over, pc, people, phone, protocol, receiver, remote, representative, service, space, support, switchboard, technology, telephone, top, us, voice, voip, white, wireless,