
In a significant technological breakthrough, Mavenir, in partnership with mobile satellite operator Terrestar, successfully completed the first Voice over NB-IoT (Narrowband Internet of Things) call in Non-Terrestrial Networks (NTN) mode in January 2025. This remarkable achievement utilized the 3GPP-standardized NTN S-band spectrum to avoid interference that commonly affects terrestrial networks. This is a critical step towards integrating satellite and terrestrial