Iu UP - Iu User Plane protocol

IuUP protocol is used to carry user plane data across the Iu interface which is associated with a RAB (Radio Access Bearer). Consequently, if several RABs are associated with a particular mobile, each of these RABs will require a separate instance of the IuUP protocol. The IuUP protocol can be found on either the IuCS or IuPS interface.


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

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