D-CSI - Dialled Service – CAMEL Subscription Information

D-CSI is used in a similar way to the O-CSI. The main difference is the O-CSI has a TDP List which when triggered initiates a dialogue with the gsmSCF and gsmSSF. The D-CSI on the other hand always uses DP2 and it is this criteria associated with the DP that dictates which gsmSCF the SSF will initiate a control dialogue with. Thus by setting multiple D-CSI it is possible to trigger a dialogue with one of a number of gsmSCF.


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

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