TOKYO, March 4 (Bernama-BUSINESS WIRE) — NTT Communications Corporation (NTT Com), the ICT solutions and international communications business within the NTT group, announced that it began commercial sales of its Active Multi-access SIM™,¹ which had been offered on a trial basis since March 28, 2023, from January 31. The new SIM and associated service will enable diverse IoT devices to switch between a network’s main and sub-carriers in the event of network failure, achieving network redundancy with a single SIM on a fully automatic basis without the need to monitor networks or initiate switching on the device terminal side.
The service offers three key benefits, starting with automatic fault detection and carrier switching, both of which are patent pending. If communication fails,² the applet³ in the SIM automatically detects the failure, switches to a sub-carrier and then back to the main carrier after a fixed period of time. The user does not need to perform any manual operation or configure complicated settings.