www.dit.edu

www.kecua.ac.in Switching system implies data transmission between two communicating entities. This transmission can be either via trunks or it can be completely wireless, technically termed as Telephone Switching and Mobile switching, respectively. We report the implementation of a switching system using very high speed integrated circuit hardware description language (VHDL) which is more reliable and efficient than the present switching system. It converts entire bulky switching unit which consists of routers, multiplexers, decoders, counters in to a single integrated circuit (IC). Simulation results are presented for transfer of data from input subscriber to the output subscriber using sequential write /random read mode with the timing diagram. To verify the transfer of data from input subscriber to the output subscriber a 16 bit op-code is assumed in which each bit represents a specific function