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.

HSCSD - High Speed Circuit Switched Data

High Speed Circuit Switched Data enhances the capabilities of the current GSM network by combining time slots on the GSM radio carrier. Data rates of 14.4Kbps, using one timeslot, 28.8Kbps using two time slots, or 57.6Kbps using four time slots can be achieved. HSCSD is best suited for services such as video conferencing.


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

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