RRC - Radio Resource Control (UMTS)

RRC is a sublayer of Layer 3 on the UMTS radio interface; it exists in the control plane only and provides an information transfer service to NAS (Non Access Stratum) signalling. RRC is also responsible for controlling the configuration of the UMTS radio interface, facilitating the establishment and management of radio bearers, mobility management and security.


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

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