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.

MTP - Message Transfer Part

MTP defines the lower three layers of the SS7 protocol stack. Layer 1 (MTP1) describes the Physical layer, defining how higher layer messages are represented on the transmission medium, including message delimiting. Layer 2 (MTP2) defines the Data Link layer, ensuring the reliable delivery of higher layer MSU (Message Signalling Units). Layer 2 also features FISU (Fill In Signalling Units) for link keep-alives, as well as LSSU (Link Status Signalling Units) in order to support signalling link establishment and maintenance. Layer 3 (MTP3) is comprised of two elements – SMH (Signalling Message Handling) and SNM (Signalling Network Management). SMH ensures higher layer signalling can be routed through the SS7 network (with the use of Point Codes). SNM is a route management facility for handling failures etc.

NetX

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

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