i use Debian 1.2 and ppp (Version 2.2.0f-19) to make a ISP connection. Below is a portion displayed by plog: .... Password -- got it send (vip^M) Serial connection established. Using interface ppp0 Connect: ppp0 <--> /dev/modem Serial line is looped back. Connection terminated. Note that vip is my password and /dev/modem is symbolic link to /dev/cua2. What is the problem? Please reply to huixf@tonghua.com.cn because I will leave the list in a minute.