We have a fully developed GPS mapping system on our own Windows server. We use GTS Mapping, Please see attached PDF which explains OpenGTS mapping. The issue is setting up the DCServers, thus you'll need experience in setting up GTS mapping. The worldwide maps are used for tracking GPS trackers that are assigned to our mapping system in admin. But for the tracker to work it requires the mapping system server name setup via the DCS.
Once complete, we need to then be given clear instructions on how we can assign the DCS name for our trackers and change the placeholder for the viewed page.
We will give full access to the server for the developer doing the work via Team Viewer.
Please let me know if you have questions ?