FCS - Frame Check Sequence

A Frame Check Sequence is generated by applying the destination and source addresses along with the packet payload to a polynomial function. The remainder of the function is recorded as the FCS and is added, typically to the trailer of the packet. At the receiving side the same function is conducted and the resulting remainder compared with the FCS. If they are the same the packet is valid.


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

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