An active link counterpart that acts as a master or a slave in radio base station systems in order to enable functional testing. It offers control over stimulus and full visibility into captured data that brings functional verification. The active link device is used in CPRI, OBSAI RP3(-01) and 10 Gigabit Ethernet interfaces for mimicking either the baseband unit or a radio head in a functional test setup. The Actor can mimic JESD204B ADC/DAC devices, sending antenna stimulus into the radio head or capturing antenna data from the radio for radio performance analysis. It provides file-based access to all channels of the interface protocol, allowing control and management payloads and individual antenna-carriers to be generated and post-processed through algorithmic models and 3rd party tools.