Villach Villach Villach (; , , ) is the seventh-largest city in Austria and the second-largest in the federal state of Carinthia. It represents an important traffic junction for southern Austria and the whole Alpe-Adria region. , the population is 61,887. Together with other Alpine towns Villach engages in the Alpine Town of the Year Association for the implementation of the Alpine Convention to achieve sustainable development in the Alpine Arc. In 1997, Villach was the first town to be awarded Alpine Town of the Year. Villach, a statutory city, is located on the Drau ("Drava") River near the confluence with
Signaling System No. 6 system where the link between country A and country B could perform the signalling functions for links to country A from country D for example. CCITT No 6 was a method developed & implemented by administrations in a limited number of countries for use in correspondent International Switching of analogue telephone calls. The next development was correspondent and non-correspondent switching of telephone calls by new operators in the countries where more sophisticated methods were required. Signaling System No. 6 SS6 or CCITT No 6 Signalling System was introduced in the 1970s as an early common channel signalling method for telephone