Ключевые слова: black, business, call center, closeup, colour, communication, concepts, conference phone, connection, contact us, customer service representative, desk, dial, dialing, electrical equipment, equipment, finger, global communications, horizontal, ideas, internet, it support, keypad, landline phone, number, office, on the phone, operator, phone, push button, pushing, service, support, switchboard operator, technology, telecommunications equipment, telephone, telephone receiver, touching, voip,