Acronyms von A bis Z
Q.673
Empfehlung der "CCITT"/"ITU" von 1988: Logic procedures for interworking of signalling system R1 to No. 7 (TUP)
Empfehlung der "CCITT"/"ITU" von 1988: Logic procedures for interworking of signalling system R1 to No. 7 (TUP)