ISDN version

The Quadro ISDN is a 4 port ISDN gateway. Each Quadro ISDN is an stand alone SIP gateway device consisting of a VPN-router, firewall, HTTP server, and call processing software. It is also equipped with LAN and WAN Ethernet ports. This gateway can be used in a standalone configuration or slaved off an existing PBX with ISDN ports. Note: The Quadro ISDN Gateway and all other ISDN based products are not supported in the USA. This product is intented for all other countries with large networks of ISDN based service providers.
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