DIN ETS 300565:1995-08 European digital cellular telecommunications system (phase 2) - Line identification supplementary services, stage 3; English version ETS 300565:1995
1995DIN ETS 300565:1995-08 European digital cellular telecommunications system (phase 2) - Line identification supplementary services, stage 3; English version ETS 300565:1995
1995DIN ETS 300565:1995 European digital cellular telecommunications system (phase 2) - Line identification supplementary services, stage 3; English version ETS 300565:1995