Once the basic data are available, various network scenarios can be investigated quickly and accurately. The sensitivity of the network to changing demands, to the choice of switching and transmission equipment, or change in technology can be easily seen.
Results are available in detailed and summarised form.
Large networks, with several hundred exchanges, can be studied. ITU is at present not in a position to answer technical ad-hoc questions except in those cases where prior special arrangements have been made. Training can also be tailored to the specific needs of a user, subject to the availability of lecturers.