Based on the core VisSim engine, VisSim/Comm) is used for the modeling and simulating end-to-end communication systems at the signal or physical level. With a full complement of communication blocks and a powerful, time-domain simulation engine, VisSim/Comm provides fast and accurate solutions for analog, digital, and mixed-mode communication system designs. The communication block set includes RF, UWB, Bluetooth, 802.x, Turbo Codes, Costas loop, PLL, VCO, BPSK, QPSK, DQPSK, QAM, BER, Eye Diagram, Viterbi, Reed-Solomon and much more. VisSim/Comm was rebadged as "Commsim" by Electronic Workbench and sold by them for a number of years.