It was at that time that the majority of the local loop was built (that is all the cables linking the users to the operator). In the 1970s, France attempted to make up for its delay in developing communications infrastructure, compared to other countries, by launching the programme 'Delta LP' (increasing the main lines). Then, in 1944, the National Centre of Telecommunications Studies (CNET) was created to develop the telecommunications industry in France. In 1941, a General Direction of Telecommunications was created within this ministry. However, it was not until 1923 that the second 'T' (for 'telephones') appeared and the department of P&T became PTT. Telephone Services were added to the ministry when they were nationalised in 1889. In 1878, after the invention of the electrical telegraph and then the invention of the telephone, the French State created a Ministry of Posts and Telegraphs. That was the optical telegraphy network of Claude Chappe.
In 1792, under the French Revolution, the first communication network was developed to enable the rapid transmission of information in a warring and unsafe country. History Nationalised service (1878–1980s)
