What is EPC (Evolved Packet Core (4G))?

Evolved Packet Core (EPC) is a system for giving converged voice and information on a 4G Long-Term Evolution (LTE) network. This permits administrators to deploy one packet network for 2G, 3G, WLAN. In 4G evolved packet core (EPC) networks this incorporates the serving packet data network gateway GPRS support node, policy control enforcement function (PCEF), subscriber services gateway (SSG) giving carrier-grade network address translation (NAT).