What are you using for a connection to your ISDN? Internal card, external TA with hi speed serial, etc? I'm wondering if the serial interface is setup wrong. Raffaele Sandrini wrote: > Normally i have have rates of 7.8 kb/s (ISDN) throughput. But if i try it > over my new router the rate is not more than 2 kb/s. Is it possible that the > Masquerading process takes too much recources on that machine? It's a 33 Mhz > Intel DX Processor.