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.

Abstract: An apparatus and method are disclosed for implementing a polarization-independent optical switch wherein switchable communication signals are retained in the optical mode while being switched between optical links in an optical communication network. The polarization-independent optical switch comprises polarization-dependent components which are advantageously arranged to switch arbitrary polarized light waves. The polarization-independent optical switch is achieved by splitting incoming arbitrary polarized light waves into two paths, a light wave with a TE radiation component and a light wave with a TM radiation component. The light wave with the TE radiation component is converted to a light wave with a TM radiation component. Both light waves having the TM radiation component are then switched in a polarization-dependent photonic switch device.