In the early forties of the 20th century, Western Union has used the first time a commercial intercity microwave transmission system. In 1935, Western Union has put into operation first intercity fax communication. The size of the commission fee for the transfer is charged according to the Western Union tariffs and depends on the amount of money sent. Payment systems are one of basic elements of infrastructure of e-commerce. In 1879 Western Union left the telephone business after losing a lawsuit against Alexander Graham Bell - the patent holder on the phone.