U - U (Unnumbered Information)

LLC (Logical Link Control) U (Unnumbered Information) frames can be sent in both ADM (Asynchronous Disconnected Mode) and ABM (Asynchronous Balanced Mode). There is no acknowledgement of receipt of U frames.

NetX

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

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