rsync. These files
however will not include the instrument calibration (IC) files, which you should download from the
ISDC public release web-page:
http://www.isdc.unige.ch/integral/analysis#Software
When the data become public you can download them from the archive:
http://www.isdc.unige.ch/integral/archive#Browse
Examples on the downloading data from the archive can be found at the Cookbook Sections of [1], [2],[3],[4].