What are the main differences between the Primary Gateway and the national gateways?
– The primary gateway contains a gateway station which serves as the link between the fixed and mobile public terrestrial networks, both for originating and terminating calls. The primary gateway is also equipped with: The Satellite Operation Center (SOC) which operates and maintains the satellite The Advanced Operation Center (AOC), which is responsible for the radio resource management of the satellite traffic channels. The Central Operation Support System (OSS) which provides the functions for customer care, billing and SIM card personalization for the entire network (including the NGWs) The National Gateway contains a gateway station but not the SOC, AOC, and OSS. However, a local Operation and maintenance Center could be provided. Each GW (including PGW) is assigned to manage a subset of the satellite resources and serve a specific region in the ground. However, the primary gateway is designed to manage more subsets and more regions than any national gateway.
