Wireless operators around the world are upgrading their networks to LTE. This means not just the addition of new network elements like the P-Gateway and the S-Gateway, but also a fundamental change to the underlying signaling from SS7 to Diameter. Mobile virtual network operators (MVNO) – who typically have their own billing system and policy controller framework – depend on the mobile network operators (MNO) to provide them the underlying wireless network infrastructure. They need to communicate with each other via standardized (or proprietary) interfaces and are significantly impacted by this migration to LTE. A Diameter Protocol Converter can convert, not just between disparate diameter variants, but also to SOAP/SS7 and other proprietary interfaces and assist MVNOs manage the migration to LTE.