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E-CSCF - Emergency – Call Session Control Function

The E-CSCF is a specialist platform which is designed to facilitate support for emergency services dialling. In this capacity, the E-CSCF will take in requests from the P-CSCF (Proxy CSCF) and S-CSCF (Serving CSCF) and route these emergency session requests to a suitable onward destination such as a PSAP (Public Safety Answering Point). In order to achieve this, the E-CSCF can use the services of the LRF (Location Retrieval Function).


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

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