Caltta Technologies Co., Ltd., which was originally part of ZTE Corporation, was established in 2012, and now is a leading provider of integrated professional trunking communication solutions. With more than 800 experienced professionals and over 400 trunking technology patents, Caltta is capable of providing broadband trunking and narrowband trunking, PTT over Cellular, emergency communications, integrated communication command, and other products and solutions. Caltta's professional trunking system and network have been successfully deployed in more than 60 countries and regions around the world, widely applicable in local government, public safety, emergency, rail transit, utilities, energy, and other verticals, providing professional communication services to more than 5 million users.