The architecture differs mainly in the uplink of the Wireless
Sensor Network gateway. For the sea transport the satellite
system on the vessel was used by connecting the cargo containers’
WSN gateways to the vessel’s network via WLAN. The
satellite system (Stratos/Xantic AmosConnect [4]) is providing
a Simple Mail Transport Protocol (SMTP) server, which was
used for delivering the messages to the satellite system. The
messages are then sent over the satellite link to an Email
Server, from where an Internet Message Access Protocol
(IMAP) cron job is fetching them regularly and inserts them
into a database provided by a server running the Django
Project Web Framework