ASA - Access Sub-attempt

An Access Sub Attempt is a subsequent AA (Access Attempt) after the original AA has failed or not been responded to. It may involve a sequence of one or more APS (Access Probe Sequences) on the AC (Access Channel) and contains the same message content as the original AA.


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

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