GOST R 55542-2013 System of national standards for quality of telecommunication services. Management of quality communications services. Monitoring of quality communications services
GOST R 53731-2009 Quality of communication services. Terms and definitions
GOST R 55542-2013 history
2013GOST R 55542-2013 System of national standards for quality of telecommunication services. Management of quality communications services. Monitoring of quality communications services