My name is Chris Chang. I got bachelor's degrees in both mathematics and electrical engineering from Fu-Jen Catholic University Taiwan and a masters degree in Electrical Engineering from University of Pennsylvania USA. I've being working in the wired communications industry and studied phone line for more than 15 years. I attended ITU-T (International Telecommunication Union) meetings and I am highly involved in the delopment of the communication standards for copper wires such as ADSL, VDSL and My expertise includes  DSP, communications algorithms, VLSI design and much more. I am entitled in 6 US patents as the first inventor or a solo inventor in wired communications. In year 2016 a serious health issue hit me and I decided to quit the job and pursue something interests me the most. Besides developing etracer I am also doing consulting for various projects. And I am open for any future opportunity.  My profile can be viewed at linkedin:

etracer is sold through my company, essues Technologies Co. Ltd., in Taiwan. For sales inquires please fill in the contact form. I will get back to you as soon as possible.