JSY2000-06MII is a standard rack mounted high 5U digital program-controlled switch system. This switch fully absorbs the advantages of many digital switches at home and abroad, and adopts the technical specifications of the International Telecommunication Union (ITU-T) G.712 and G.732 recommendations for design and production. It is a preferred model with completely independent intellectual property rights for the new generation. This model is also a digital model licensed by the National Torch Program and the General Staff of the Chinese People's Liberation Army to enter the military network. Support multiple relay and signaling interfaces, easy to install, expand, manage, and maintain; Adapting to any communication environment, specialized network systems such as industrial and mining enterprises, government agencies and institutions, military units, public security, electricity, coal mines, petrochemicals, chemicals, railways, banks, etc. provide various telephone management application solutions. They can also be used as PCM end offices or access devices in major operations, making them ideal equipment for implementing office intelligence. Total capacity of internal and external lines: 16 to 256 lines, PCM digital relay interface E1:1 to 4 (PRI/7/1).