Restream, owned by Rostelecom, and Protei, a developer of communications equipment, have established a joint venture, Protei-RTC LLC, in which Restream holds 51% and Protei has 49%. Partners expect that the establishment of the joint venture will speed up the development of the core of 5G mobile communications and start testing as early as 2025. Experts admit that in the future Rostelecom will take over Protei.