# ThingPark Global SIM overview
ThingPark Global SIM is LPWAN-enabled world-wide cellular connectivity service based on ThingPark Wireless.
The solution is based on ThingPark Wireless + EPC Connector (EPCC). EPCC is an add-on to ThingPark Wireless that allows interconnection with 3GPP core networks using 3GPP S6a and S5/S8 interface. The ThingPark Global Sim is based on EPCC connected to 3GPP global roaming hub that allows worldwide global cellular connectivity.
In the next sections, you will learn the high level features of ThingPark Wireless.