IT251I-VdS Operation manual Manual AT commands Manual VdS2465 protocol (German version only) USB driver, version 2.12.28 Configuration software "QuickSetup" Configuration software "CONNY" IT251I-VdS Operation manual Manual AT commands Manual VdS2465 protocol (German version only) USB driver, version 2.12.28 Configuration software "QuickSetup" Configuration software "CONNY"