备注： The 2B+D Dispatch System integrates with the 20-20® switch through 2B+D interface. It offers prompt and flexible call processing to meet the very demanding customers in key dispatching positions of fire brigade, police station, public security, electric power, natural gas, mining, and military area etc. 1,Remote digital dispatch console. 2,Abundant networking interfaces. 3,Virtual switches. 4,LCD dispatch console. 5,Independent dual handsets
