1992ETSI ETS 300 217-4-1992 Network Aspects (NA); Connectionless Broadband Data Service (CBDS) Part 4: Address Screening Supplementary Service
1991ETSI PRETS 300 217-4-1991 Network Aspects (NA); Connectionless Broadband Data Service (CBDS) Part 4: Address Screening Supplementary Services (DE/NA-53201-4)
ETSI PRETS 300 217-4-1992 Network Aspects (NA); Connectionless Broadband Data Service (CBDS) Part 4: Address Screening Supplementary Service was changed to ETSI ETS 300 217-4-1992 Network Aspects (NA); Connectionless Broadband Data Service (CBDS) Part 4: Address Screening Supplementary Service.