ANACOM

1. 

General maintenance principles : maintenance of international transmission systems and telephone circuits: recommendations M.10 - M.782 / International Telecommunication Union

Data Publicação: 1989 Tema: Vária

Monografias  
2. 

Maintenance of international telegraph, phototelegraph and leased circuits : maintenance of the international public telephone network: maintenance of maritime satellite and data transmission systems: recommendations M.800 - M.1375 / International Telecommunication Union

Data Publicação: 1989 Tema: Vária

Monografias