Is one of message forms via the Internet; you only have to press the
icon or button on the site and the connection with the operator will follow
immediately. This function is often used on the websites for a quick
connection.
Telephone service companies have created a special communication service without the need to use customer's equipment. It's called a "virtual number". It also has a text type of "virtual SMS center." Thanks to the virtual link you can make calls or send messages while connected to the equipment of the company.