IP-enable legacy PBX systems with an Enterprise-class SmartNode 4980 VoIP Gateway-Router. Supporting up to 120 concurrent VoIP calls, the SN4980 with built-in IP Router enables Enterprises to connect existing PBX systems with advanced IP telephony services and the PSTN. The SmartNode™ 4980 VoIP GatewayRouter allows Enterprises to IP-enable their legacy PBX systems. Evolving from Patton’s award winning SmartNode 4960 Series, the next generation SmartNode 4980 Series comes now with IPv6 upgradeable hardware.