One work with ordinary style. The modelling of very much general ISDN, do not very much attract attention, certainly performance can trust , Very steady. As ISDN of 128 Ks, fast and a lot of naturally than 56 Ks, but in the present high speed network, Not having any advantage, I think I want ADSL to keep up with the trend at least, Certainly, not possessing the place that surf the Net at a high speed in some, this is good, Because its price is satisfactory at least.