That's an interesting find. It will require a regular phone 25-pair to RJ-11 patch panel. It won't however fix your bridge's 12 machine limit, since that is caused by limited memory to store AppleTalk addresses. The Star Controller is a repeater with a management processor. It's not a true LocalTalk switch. I don't think anybody made one. AppleTalk doesn't have anything like NAT to share a single address among several clients. Back then, nobody thought there'd ever be networks that needed more than two billion distinct addresses.