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SRVCC - Single Radio Voice Call Continuity

The network feature which allows ongoing calls to be seamlessly switched between 4G and 2G/3G access networks. SR-VCC is essential for VoLTE networks that do not benefit from ubiquitous LTE coverage (in which case 2G/3G coverage fills in the gaps).


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

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