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.
IDC projected over 9 billion minutes of voice traffic to travel over worldwide packet networks in 2000, exceeding 135 billion minutes in 2004. Service revenue is projected at 1.6 billion in 2000 and 18.7 billion in 2004.