What tubaman said. It was at one time possible to get new boxed VMG 1312-B10As on ebay even after ZyXel stopped supplying them. But in any event, as I said, I personally would go for one of the high end VMG 8xxx-B10A or 9xxx-B10A or -10B models. I can’t remember the exact model numbers; Kitz herself uses one of these as a router. An advantage of all of these ZyXELs, apart from being a fine modem, is that it has PPP MTU = 1508 ie IP MTU = 1500 if you put our very own Johnson’s custom software into it and your router and wholesale service provider can support it.