GMSC - Gateway Mobile Switching Centre

A Gateway Mobile Switching Centre provides an edge function within a PLMN (Public Land Mobile Network). It terminates the PSTN (Public Switched Telephone Network) signalling and traffic formats and converts this to protocols employed in mobile networks. For mobile terminated calls, it interacts with the HLR (Home Location Register) to obtain routing information.


  • Fully interactive 3GPP based network map
  • Narrated call flows
  • Detailed network procedures

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