State overview diagram for interworking of Signalling System No.5 to No.6; Notes to interworking of Signalling System No.5 to No.6; Interworking of Signalling System No.5 to No.6
ITU-T Q.642 SPANISH-1988 history
1988ITU-T Q.642 SPANISH-1988 Logic Procedures for Interworking of Signalling System No. 5 to No. 6