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.

LLPDU - Logical Link Control Protocol Data Unit

In a GPRS system an LL-PDU is a frame comprising of either, user data, SMS message or GPRS Mobility Management information which has been built by the LLC (Logical Link Control) protocol enabling its reliable transfer between the MS (Mobile Station) and SGSN (Serving GPRS Support Node).


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

Explore NetX today with a
free trial.
More Info about NetX