Diamond Netcommander ISDN/EC Support for Linux

Per-Arne Hellarvik submitted this question: "I have a (it seems) unusual internal PnP ISDN card, the Diamond Netcommander ISDN/EC. I've read somewhere that someone was trying to get some specs on the chipset from Diamond Multimedia, but that is some time ago. Can you tell me if there is support for this card in Linux, or if there is someone how know of a driver for this card??" Let me just say that Diamond has a bad record for releasing theyr hardware specs for their video line, and I have doubts that they'll treat their ISDN line any differently, although it would be nice if they started offering open specs so everyone can use, what would be decent hardware.