State overview diagram for interworking of Signalling System No.7 (TUP) to No.6; Notes to interworking of Signalling System No.7 (TUP) to No.6; Interworking of Signalling System No.7 (TUP) to No.6
ITU-T Q.663 FRENCH-1988 history
1988ITU-T Q.663 FRENCH-1988 Logic procedures for interworking of signalling system No. 7 (TUP) to No. 6