ETSI PRETS 300 508-1993 European Digital Cellular Telecommunications System (Phase 2); International Mobile Station Equipment Identities (IMEI) (GSM 02.16)
1995ETSI PRETS 300 508-1995 European Digital Cellular Telecommunications System (Phase 2); International Mobile Station Equipment Identities (IMEI) (GSM 02.16)
1993ETSI PRETS 300 508-1993 European Digital Cellular Telecommunications System (Phase 2); International Mobile Station Equipment Identities (IMEI) (GSM 02.16)