FIG. 1 shows a Long-Term Evolution (LTE) network 100. LTE is a standard for wireless communication of high-speed data between multiple base stations 102, 102a-n and User Equipment (UE) 300, 300a-n, such as mobile phones and data terminals. LTE is based on the Global System for Mobile Communications/Enhanced Data Rates for GSM Evolution (GSM/EDGE) and Universal Mobile Telecommunication System/High Speed Packet Access (UMTS/HSPA) network technologies. LTE is configured to increase the capacity and speed of the telecommunication by using different radio interfaces in addition to core network improvements. LTE supports scalable carrier bandwidths, from 1.4 MHz to 20 MHz and supports both frequency division duplexing (FDD) and time-division duplexing (TDD). LTE-TDD networks 100 use a single frequency for uploading and downloading information. LTE-TDD networks 100 operate at frequencies ranging from 1450 MHz to 4300 MHz, with several different bands being used. On the other hand, LTE-FDD networks 100 refer to the transmitting device (e.g., base station 102 and the UE 300 transmitting and/or receiving upon different carrier frequencies.

In some implementations, an Evolved Packet Core (EPC) 106 provides a framework configured to converge voice and data on the LTE network 100. The EPC 106 unifies voice and data on an Internet Protocol (IP) service architecture and voice is treated as just another IP application. The EPC 106 includes several key components 108 that include, without limitations, a Mobility Management Entity (MME), a Serving Gateway (SGW), and a Packet Data Node Gateway (PGW).