The Integral Science Operations Centre at ESTEC is responsible for support
to the community in the issue of the Announcements of Opportunity, support
for the Time Allocation Committe and Mission Planning. In the paper we disc
uss the aspects of the ISOC which are of interest to the community, namely;
- the role of the ISOC in the overall ground segment;- the ISOC data archi
ve; - the observation scheduling procedures and policies.