Hello, I need a Low-Cost external ISDN-Modem which supports ISDN with 56/64 kBit and the X2/V.90 Protocol. Curently I am running 4 internal USR Courier I-modems but they are limmited to 4 Modems at a Computer and they are too expensive (350 US$ each). The same is for the ZyXel (320 US$ each). Many Thanks in advance Michelle