Apresa records telephone calls from the NEC Univerge using passive recording. During a call, VoIP data is sent between the phones. This VoIP data is copied to the call recorder by port mirroring (also known as SPAN). In a Local Area Network, this port mirroring is done by a network switch. The picture below shows internal passive recording. With this setup, Apresa can record internal and external calls.
Examples of NEC Univerge telephone systems are NEC SV8100, SV9100, and SV9500. The Apresa can also record telephone calls from the SV9500 using SIPREC.
SIPREC recording is available for the NEC Univerge SV9500.