Edwards MN-FVPN Voice Over Internet ProtocolEDWARDS Voice over Internet Protocol (VoIP) encoder decoder units allow for the use of Transmission Control Protocol Internet Protocol (TCP IP) to transmit supervised digital audio for mass notification applications. While in encoder mode, the MN FVPN takes audio signals from the Central Control Station (CCS) and transmit it over an Ethernet path. While in decoder mode, the MN FVPN takes the digital audio signal from the Ethernet pathway and provides