Covid 19 Update: Given the current global situation, we have paused the delivery of our LiveOnsite courses, but our LiveOnline and OnlineAnytime Packages remain unaffected. Browse over 50 online courses in our course catalogue, or get in touch to register your interest in future LiveOnsite courses when we are able to safely resume in person training.

DP Criteria List - Detection Point Criteria List

The DP (Detection Point) criteria indicate conditions that must be met in order for the gsmSSF i.e. SSP (Service Switching Point) to request instructions from the gsmSCF i.e. SCP (Service Control Point). The relevant criteria for mobile terminated calls are typically checked through interaction with the HLR.


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

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