The router should call a script on our servers hourly. The format is:
https://tech.hotspotsystem.com/up.php?mac={MACADDRESS}&nasid={NASID}&os_date={ROUTEROS_NAME&VERSION}&uptime={ROUTER_LOCAL_TIME}%20up%20{UPTIME}%20load%20average:%20{CPU_LOAD}%
The router should replace these parameters dinamically.
Then you can also add GPS parameters in case your router supports them as defined here:
http://docs.hotspotsystem.com/router-setup/gps-data-support-for-life-script