WALKIE-TALKIE

On August 17th, the 4G wireless communication system (hereinafter referred to as the "4G wireless private network") used in the Qinglongsi coal mine, which was built using Datang Mobile's SmartLTE wireless private network, successfully completed the network connection with China Telecom, achieving high-definition voice call services for VoLTE one card and one number in both the operator's public network and underground mine's 4G wireless private network. This solved the problem of having to carry two terminals for wireless communication in both the mine and underground areas The inconvenient memory of long and short numbers - a problem that has caused great trouble for underground communication among coal mine workers for a long time - has expanded new ideas for the application of underground wireless communication networks

Qinglongsi Coal Mine is a digital mining mine promoted by Shenhua Group, with a designed production capacity of 3 million tons/year. It is one of the backbone mines of Yulin Shenhua Energy Company. As the main equipment provider of the 4G wireless private network used in the Qinglongsi Coal Mine, Datang Mobile, in collaboration with China Telecom and Shenzhen, implemented one terminal (mining 4G private network mobile phone), one card (China Telecom USIM card), one number (public network private network number), and underground communication functions the next day

After this function is implemented, users only need to carry a terminal and a number to seamlessly achieve language exchange between public and private networks. As a public network user, data is bypassed to the local enterprise network, making it more convenient to use while ensuring the security of internal data within the enterprise

In 2015, Datang Mobile launched the SmartLTE mining 4G wireless private network based on the fourth generation mobile communication technology of LTE. With its inherently safe design concept, advanced technology, reliable quality, and rich business, it has become the network foundation for safe production and efficient management in mines. It has been applied in multiple large mining groups and has been awarded the title of" The second prize of 2017 China coal industry Science and Technology Award&rdquo

At the same time, Datang Mobile continuously seeks to deeply integrate its products with the characteristics and management needs of coal mine production processes, actively developing and transforming the system's applicability. It has successively developed multiple businesses and applications that truly solve the practical pain points of coal mine production, such as underground VoLTE, underground one network one station comprehensive communication (4G) platform, underground fully enclosed cage voice and video communication, etc, Create a safe and efficient broadband wireless communication platform for coal mining enterprises