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.

Presence Server

Presence is a service which can be applied as a supplement to many other services, such as voice, gaming and IM. Presence Servers collate presence information from presence clients and subsequently distribute this information to interested parties. SIP provides a presence architecture through use of the SUBSCRIBE, NOTIFY and PUBLISH methods.


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

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