NT - Non Transparent

Non Transparent data transfer in GSM utilizes the RLP (Radio Link Protocol) to ensure error free data by adopting a retransmission mechanism. PDU (Protocol Data Unit) found to be incorrect will be discarded and a request for a retransmission will be made to the originator.


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

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