In the 30's of the twentieth century, Western Union has become the world's largest telegraph company. Western Union has several divisions, with products such as person-to-person money transfer, money orders, business payments and commercial services. In 1935, Western Union has put into operation first intercity fax communication. Most service points of Western Union work in the time convenient for customers throughout the week and throughout the year. Payment systems are one of basic elements of infrastructure of e-commerce. In 1933, by the Western Union Company were invented "singing telegrams".