Dinstar 16 Ports GSM VoIP Gateway, offered by Optima Technologies is a multi-functional device that can efficiently make a smooth changeover between VoIP network and mobile. It has made a limitless improvement in the software features and improves the new hardware structure design. Dinstar 16 Ports GSM VoIP Gateway is accessible with a pop-up SIM card slot, through which the users can change the SIM card effortlessly without dismantling of the setup. Offered gateway of sixteen ports is highly compatible with SIM Cloud as well as Dinstar SIMbank solution. Furthermore, it has compatibility with PBX, IP trunk and EPABX. Its suitability to work with a call center software and soft-switches is marvelous.