Terminal computing involves processing that takes place remotely from the terminal. Travel agents originally had to connect individually to each airline's reservation system and be trained on different mainframe clients. Computerized reservation systems (CRS) allowed airlines to provide up-to-date flight and availability information to travel agents and customers worldwide, enabling airlines to compete through frequent schedule and fare changes. Sabre, launched in 1960, was the first CRS and originally handled reservations for American Airlines through its IBM mainframe data center in New York, processing 83,000 phone calls daily. Sabre Holdings now operates as a global travel technology company, connecting over 57,000 travel agents and millions of travelers to airlines, hotels, rental cars and other travel