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.

CAT - Customized Alerting Tone

Also termed Color Tunes or Caller Tunes, this service plays a piece of music or audio clip to the Calling Party when a particular subscriber is dialled, as opposed to hearing the standard ringing tone.


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

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