Thanks, I did try putting the OBi in the DMZ and that had no effect, problem continued. The device that the ISP supplies is a Humax HGB10R-02 Wireless Voice Gateway combo modem, router, Wi-Fi access (2.4 & 5GHz), 4 port switch and RJ11x2 for the phone along with a coax connector for the cable. I have set the modem/router to bridge mode and shut off the Wi-Fi since I use my own router to handle everything. Just to make sure, prior to enabling bridge mode, I disabled the units nat and firewall.