The Japanese version of the E-Carrier Hierarchy in Europe or T-Carrier Hierarchy in North America. J-1 1.544Mbps J-2 6.312Mbps J-3 32.064Mbps J-4 97.728Mbps J-5 397.000Mbps


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

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