Stored Program Control (Spc) Exchange System Experiment Box

We are engage in exporting, supplying and trading of Stored Program Control (SPC) Exchange System Experiment Box in Wenzhou, Zhejiang, China. This trainer is developed according to 'SPC exchange principle' and actual teaching and practice requirements. It is a combination of software and hardware, which adopts modular structure design, making it convenient for connection and testing. It integrates three kinds of switched network: manual exchange, space division exchange and time division exchange, which can effectively show the development history of switched network. It simulates the structure of typical central office exchange system that separates the CPU, register and speech path exchange controller to make students fully understand the composition of SPC exchange system. Microcontroller is adopted to realize the generation of signaling and signal tone. The time slot of each speech path can be configured at will, the extension number, call class and system time can be set locally. The trainer comes with strong system self-checking function, caller identification transmit and receive function, its exterior line can be connected with local telephone network. The back-stage management software adopted can clearly display the principle, billing, relaying working modes of SPC exchange system by graph.