шлюз IP / VoIP(A third-party hardware device or product that connects a legacy PBX to a LAN. An IP/VoIP gateway translates or converts TDM or telephony circuit-switched protocols to packet switched protocols that can be used on a VoIP-based network)
IRC(A third-party hardware device or product that connects a legacy PBX to a LAN. An IP/VoIP gateway translates or converts TDM or telephony circuit-switched protocols to packet switched protocols that can be used on a VoIP-based network)
IP/VoIP gateway A third-party hardware device or product that connects a legacy PBX to a LAN. An IP/VoIP gateway translates or converts TDM or telephony circuit-switched protocols to packet switched protocols that can be used on a VoIP-based network
