I have an Officeserve 7400 with a Samsung Svmi 20E Vmail card in it...the vmail to email works great but the 20e reboots itself between 5 and 30 minutes everytime I connect the network to the LAN port of the card. I saw where someone had said to put a cheap router on this to block all incoming traffic to the 20e but if I do this the vmail to email won't work...has anyone had this problem with the older 20e cards? Thanks ....