Most device testing tools are limited to testing functions on the radio interface
between devices and base stations. Polaris EPC Emulators can be combined with UE
Simulator tools or commercial LTE small cells to create an end-to-end test bed that
tests the device's features and services, such as VoLTE, ViLTE, eMBMS, WiFi Calling, etc.
For negative testing, there is the option to set policies for various LTE protocols to
test the device's capability to handle abnormal or error scenarios.