Beijing Raycomm Digital Technology Co., LTD. (RDT) is one of China's leading telecoms manufacturers. It was founded in 2002 in National Key High and New Tech Industry Base---Shangdi Information Industry Base, and registered by some returned scholars and key members of telecommunication field throughout China. RDT holds abundant capital and technologies. At present, over ten senior technicians are working in the company and dozens of patent techniques are in use. Many fruits of scientific researches are listed in National Key Forster Projects.

RDT always defines itself as a trinity of development, production and sales/services. Among all the staff members of RDT, 35% of them belong to R&D department, 30% production, 20% marketing, 12% corporate management and 3% others. RDT keeps a large number of core techniques of telecoms, especially in the field of integrated services multiplexing and optical transmission, which rank the top of whole industry nationwide.

By the profound understanding toward the needs of the users and the capability of persistent development, RDT provides a series of IDM devices as follows: IDM-240 series HC full interleaving PCM devices, IDM-120 series flexible multiplexers, IDM-MINI series small capacity multiplexers, IDM-XN series 1310-1550 optical multiplexers, IDM-XM series integrated services access platform, IDM-V series video transmitting devices and CH series protocol conversion devices etc.. These devices are widely used in many fields such as public security, army, power system, mining, hydrological supervision, bank, broadcast & television, airport, expressway and city security