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.


An ITU-T (International Telecommunications Union – Telecommunications Standardization Sector) numbering plan standard, make up of the MCC (Mobile Country Code), MNC (Mobile Network Code) and MSIN (Mobile Station Identification Number). The IMSI (International Mobile Subscriber Number) number of a mobile is an E212 number.


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

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