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.

NDSS - Network Directed System Selection

This feature allows the MS (Mobile Station) to automatically register with a preferred system while roaming. It also enables the MS to be automatically directed by a service provider to a suggested system, regardless of the frequency band class, cellular band, or PCS (Personal Communications System) frequency block.


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

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