Dialogic Blog

The Importance of 3G Interworking with Diameter and RADIUS

by Jim Machi

Jun 9, 2015 7:36:00 AM


The number of LTE networks is expected to be 460 by the end of 2015, supporting approximately 500 million subscribers at the end of 2014, with continued phenomenal growth in sight.  But that doesn’t mean 3G should be forgotten; in fact, it’s quite the opposite.  According to GSMA Intelligence, 3G connections will continue to grow at least through 2020 where the forecasting ends.  It’s likely to continue growing beyond that, too.

This means many more 3G connections, far more than LTE, at least until 2020. And that means 3G cannot be forgotten if you have an LTE network, and that interworking with 3G is critical for subscriber call/data completion. In other words, you’ll be leaving money on the table if this interworking is not supported.  From a roaming perspective, supporting the Diameter to MAP/SS7 Interworking function as defined in 3GPP Technical Spec 29.305 is critical. Ignoring this interworking means ignoring revenue.

We also know WiFi offload is becoming a critical component of the network connectivity story.  We’ve all read about 3G cell site congestion. WiFi offload from 3G then also becomes important, which means support of RADIUS to MAP is also critical. WiFi offload is also important for LTE, less from a cell site congestion perspective but more from a perspective of seamlessly extending the network for the subscriber.

Dialogic has been in the signaling business since the 1990’s and has supported signaling interworking since then. Today, the Dialogic’s Helix product supports both of these critical signaling interworking functions.  Come visit us at the LTE World Summit, taking place June 23-25 at Amsterdam RAI, at Booth #65.

Topics: VoLTE/VoWifi & IMS, 3G, 4G, 5G, and WiFi, Signaling