VoIP Technology

Currently more and more telephony service providers are introducing Voice over IP (VoIP). Global deregulation of telephone markets allows telephone carriers to begin competition with cheaper IP carriers. New infrastructure allows operators to compete at a lower price and deploy new applications to their customers faster than they can do it using legacy equipment.

Target audience

The course is intended for technical mobile network staff and their management who plan to or already work on introducing VoIP services.

Training contents

  • Introduction
    (GSTN, MPLN, IMS/RCS VoIP providers, standard, protocols),
  • GSTN – Global Switch Telephony Network (PSTN, ISDN)
    (basic network architecture, available services, signalling system no7),
  • Mobile Network
    (basic architecture, from classical signalling to signalling over IP, basic services, packet transmission services, Evolved Packet Core (EPC), different access: GSM, WCDMA, LTE),
  • VoIP Technology
    (IP basics, OSI model, IP addressing and protocols, voice delivery over IP),
  • Transmission of voice over IP
    (delay, jitter, pulse code modulation, voice compression, echo effect, packet loss, QoS),
  • IP Signalling protocols – H.323
    (H.323 nework elements, protocol suit, traffic cases),
  • IP Signalling protocols - SIP
    (SIP protocol, SIP messages, SIP traffic cases),
  • IP Signalling protocols – Gateway Control Protocol
    (GCP Protocol, Media Gateway Controller, Media Gateway),
  • IP Signalling protocols - Diameter
    (Diameter protocol, diameter messages, communication with DIAMETER).


The participants should have a general technical knowledge about IP networks and mobile networks.

Training method



2 days