DINSTAR ANALOG VoIP GATEWAY It is the Dinstar DAG series Analog VoIP gateways are reliable, cost-effective VoIP gateways that effortlessly connect your analog telephones, fax machines, and older telephone systems with IP PBX systems as well as IP Phone network, making the most of the investment in your existing telephony infrastructure, and making it easier to migrate your VoIP. The DAG series comes with a wide range of gateways that are robust with one through 128 FXS ports four and 32 FXO ports and hybrid 4FXS 4FXO,8FXS 8FXO are widely used by service providers and companies.