CSTA passive call recording is available for a.o. the Mitel 400 Series. The VoIP data sent between the PBX and the VoIP provider is copied to the Apresa by port mirroring on a network switch. The call signaling data is sent by the PBX to the Apresa using CSTA.
You can record calls from any phone, including analog and TDM phones, when they are connected to the PBX.