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Q.698
Empfehlung der "CCITT"/"ITU" von 1993: Interworking of signalling system No. 7 ISUP, TUP and signalling system No. 6using arrow diagrams Interworking between Digital Subscriber Signalling System No. 1 and Signalling System No. 7
Empfehlung der "CCITT"/"ITU" von 1993: Interworking of signalling system No. 7 ISUP, TUP and signalling system No. 6using arrow diagrams Interworking between Digital Subscriber Signalling System No. 1 and Signalling System No. 7