Red Privada de Servicios Integrados (PISN). (Ratificada por AENOR en octubre de 2004).
Private Integrated Services Network (PISN); Addressing [ISO/IEC 11571 (1998), modified] (Endorsed by AENOR in October of 2004.)
Buy on AENOR
33.040.35 / Telephone networks
33.080 / Integrated Services Digital Network (ISDN)
CTN 133 - Telecommunications
EN 300189 V1.2.1 (Identical)
Esta norma está disponible en https://www.etsi.org