PSN provides backbone/backhaul for cellular network with interconnection of terrestrial stations via satellite relay, where data is sent from BTS (Based Transceiver Satellite) to BSC (Based Station Controller) and BSC to MSC (Mobile Switching Center) via other network or network link. internals. This system is implemented to reach areas in remote Indonesia that do not have a terrestrial telecommunications network.

PSN itself has been the main provider of satellite-based services for Cellular Backhaul since 2001 to the largest GSM operator in Indonesia that connects cellular networks throughout Indonesia, even to remote areas.