C&S provide core chipsets for multimedia and wireless communications.Major semiconductor Businesses are as follows.Video Processing:Video Processor for PSTN/ISDN/LAN VideophoneSpeech Processor:DSP-based audio chip and S/WWireless Communication:Modem chip for WLL, Pager, W-LAN,Bluetooth,BBA and IMT-2000C&S Videophone,that realized with our state-of-the-art chipsets, can meet your expectation of visual communication under PSTN telephone line. Please visit our web-site, www.cnstec.com,for further information.