We have designed and installed a new active remote observing system for the 1-m, f/15 telescope at the Tonantzintla
Observatory. This remote system is operated in real-time through the Internet, allowing an observer to control the
building, the telescope (pointing, guiding and focusing) and the CCD image acquisition at the main and finder
telescopes from the Instituto de Astronomia headquarters in Mexico City (150 KM away). The whole system was
modeled within the Unified Modeling Language (UML) and the design has proved to be versatile enough for a variety
of astronomical instruments. We describe the system architecture and how different subsystems (telescope control, main
telescope and finder image acquisition, weather station, videoconference, etc.) that are based on different operative
system platforms (Linux, Windows, uIP) have been integrated. We present the first results of an IPv6 over IPv4 tunnel.
Recent remote direct imaging and spectroscopic observations have been used to test the astronomical site. We conclude
that this remote system is an excellent tool for supporting research and graduated observational astronomy programs.