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.

PSI - Provide Subscriber Information

This message is used as part of the CAMEL ATI (Any Time Interrogation) process. It is sent from the HLR to the serving MSC in order to retrieve subscriber state and location information.

NetX

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

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