Deactivation of UMTS network (3G) and CSD service
Mobile phone operators O2, Vodafone and Telekom informed us in November 2020 that their UMTS mobile phone network (3G standard) would be switched off on 30 June 2021. Vodafone will be terminating the CSD standard (Circuit Switch Data) on 31 December 2020. Telekom will successively withdraw this service between now and 31 December 2022. If your systems are fitted with one of these modems, please contact us as required.