Abstract: The disclosed systems and methods use a public eNodeB to access a private P-GW, IMS and ePDG for testing purposes. The method of testing a DUT teaches loading the DUT with a designation of a test APN to access through a cellular or WiFi calling network. The APN names a test P-GW controlled by a testing entity—the P-GW name resolvable by accessing a GRX. The test P-GW is specially adapted to testing and providing control over tests. The DUT initiates contact with the network to establish an end-to-end IP connection through the P-GW designated by the APN. The P-GW generates test error conditions and codes during establishment of the connection, and can include attack messages, payloads and recording responses of the DUT to the APN attack messages and payloads. For other tests, the end-to-end connection is established, test traffic is carried over the connection, and test analysis is performed.