Acronyms von A bis Z
D.251
Empfehlung der "CCITT"/"ITU" von 1988: General charging and accounting principles for the basic telephone service provided over the ISDN or by interconnection between the ISDN and the public switched telephone network
Empfehlung der "CCITT"/"ITU" von 1988: General charging and accounting principles for the basic telephone service provided over the ISDN or by interconnection between the ISDN and the public switched telephone network