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LRF - Location Retrieval Function

In the 3GPP IMS, the LRF retrieves location information for users that have initiated an emergency session. This location information is provided to the E-CSCF (Emergency CSCF) in order to facilitate routing of the call to a suitable PSAP (Public Safety Answering Point).


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

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