IMS architecture for the extension of 2G/3G mobile networks to the Internet Video and VoIP users.

One of the most discussed challenges that worldwide carriers are facing today is the telecommunication networks convergence.
Third generation mobile networks and broadband access to the Internet are spreading together with new challenges and opportunities. The IP Multimedia Subsystem (IMS) is the acclaimed architectural model that is guiding the transition to the next generation of IP based telecommunication services.

Scenario

During the past few years telecom networks have been highly fast shaping environments; technology evolves very quickly and the highly competitive scenario demands for the continuous offering of new services. Only few of such new services become killer applications but these killer applications change very quickly the spending habits of the end user.
The recent advent of network convergence is starting to bridge three segments that were traditionally isolated: fixed voice, mobile voice and IP services. Nowadays end users rely on their Internet connection to place phone calls and on their mobile phone to connect to the Internet; moreover voice services revenues are declining faster than expected and the ARPU is being driven by value added services.

Check this Whitepaper for a full description of the solution.