With the first commercial launches of 4G mobile networks in the year 2010, based on LTE, it is important to note the change of the implementation concept for the delivery of mobile voice and SMS services.

In January IP corner article, David Eror, CCNP and CCSI at NIL Data Communications, explains more about all-IP network-based architecture, which is - with the central role of the IP Multimedia Subsystem (IMS) - taking place in 4G.