Huawei offers the industry’s first Software-Defined Packet Transport Network (SPTN) solution, featuring unified multi-service transmission, high bandwidth, and differentiated quality assurance — essential for future-oriented packet transport networks. The PTN 7900 series is the industry’s first Software Defined Networking (SDN)-based Packet Transport Network (PTN) device, with large capacity and high bandwidth. The series provides 40 GE, 50 GE, 100 GE, and 400 GE interfaces, intelligent services, traffic visualization, quality measurement, and capacity predictability, supporting long-term evolution and multi-service transmission for enterprises effectively.It can be used as the core transmission device in the production network of the electric power, transportation, and mining industries.