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Although I can use Win95 to connect to the ISP, I can't use PAP to connect to ISP in Debian 2.0. I remember i connected to ISP in Debian 1.2. I'sure that ISP's PPP is working. Below is output of plog, using PAP: Jan 2 03:47:09 debian pppd[196]: Using interface ppp0 Jan 2 03:47:09 debian pppd[196]: Connect: ppp0 <--> /dev/ttyS2 Jan 2 03:47:09 debian pppd[196]: sent [LCP ConfReq id=0x1 <asyncmap 0x0> <magic 0xffde> <pcomp> <accomp>] Jan 2 03:47:36 debian last message repeated 9 times Jan 2 03:47:39 debian pppd[196]: LCP: timeout sending Config-Requests Jan 2 03:47:39 debian pppd[196]: Connection terminated. Jan 2 03:47:39 debian pppd[196]: Receive serial link is not 8-bit clean: Jan 2 03:47:39 debian pppd[196]: Problem: all had bit 7 set to 0 Jan 2 03:47:57 debian pppd[196]: Hangup (SIGHUP) Jan 2 03:47:58 debian pppd[196]: Exit. Below is ppp.log, using chatscript: Jan 1 05:30:26 debian chat[497]: abort on (NO ANSWER) Jan 1 05:30:26 debian chat[497]: send (ATZ^M) Jan 1 05:30:26 debian chat[497]: expect (OK) Jan 1 05:30:44 debian chat[497]: ATZ^M^M Jan 1 05:30:44 debian chat[497]: OK Jan 1 05:30:44 debian chat[497]: -- got it Jan 1 05:30:44 debian chat[497]: send (ATDT169^M) Jan 1 05:30:44 debian chat[497]: expect (CONNECT) Jan 1 05:30:44 debian chat[497]: ^M Jan 1 05:31:24 debian chat[497]: ATDT169^M Jan 1 05:31:24 debian chat[497]: CONNECT Jan 1 05:31:24 debian chat[497]: -- got it Jan 1 05:31:24 debian chat[497]: send (^M) Jan 1 05:31:24 debian chat[497]: expect (name:) Jan 1 05:31:34 debian chat[497]: 38400^M^M Jan 1 05:31:34 debian chat[497]: ^M Jan 1 05:31:34 debian chat[497]: ^M Jan 1 05:31:54 debian chat[497]: Welcome to Shanghai 169-7-1 S17^M Jan 1 05:31:54 debian chat[497]: ^M Jan 1 05:32:09 debian chat[497]: alarm Jan 1 05:32:09 debian chat[497]: send (^M) Jan 1 05:32:09 debian chat[497]: expect (name:) Jan 1 05:32:24 debian chat[497]: as username and password^M Jan 1 05:32:44 debian chat[497]: To enter Shanghai 169 Services^M Jan 1 05:32:44 debian chat[497]: ^M Jan 1 05:32:54 debian last message repeated 2 times Jan 1 05:32:54 debian chat[497]: username: Jan 1 05:32:54 debian chat[497]: -- got it Jan 1 05:32:54 debian chat[497]: send (??????) Jan 1 05:32:55 debian chat[497]: expect (word:) Jan 1 05:32:55 debian chat[497]: ^M Jan 1 05:33:04 debian chat[497]: username:^M Jan 1 05:33:14 debian chat[497]: username:169^M Jan 1 05:33:24 debian chat[497]: Password: Jan 1 05:33:24 debian chat[497]: -- got it Jan 1 05:33:24 debian chat[497]: send (??????) Jan 1 05:33:24 debian chat[497]: send (\d) Jan 1 05:33:25 debian pppd[496]: Serial connection established. Jan 1 05:33:34 debian pppd[496]: Using interface ppp0 Jan 1 05:33:34 debian pppd[496]: Connect: ppp0 <--> /dev/ttyS2 Jan 1 05:33:34 debian pppd[496]: sent [LCP ConfReq id=0x1 <asyncmap 0x0> <magic 0x9dd3> <pcomp> <accomp>] Jan 1 05:34:01 debian last message repeated 9 times Jan 1 05:34:04 debian pppd[496]: LCP: timeout sending Config-Requests Jan 1 05:34:04 debian pppd[496]: Connection terminated. Jan 1 05:34:04 debian pppd[496]: Receive serial link is not 8-bit clean: Jan 1 05:34:04 debian pppd[496]: Problem: all had bit 7 set to 0 Jan 1 05:34:13 debian pppd[496]: Terminating on signal 15. Jan 1 05:34:14 debian pppd[496]: Hangup (SIGHUP) Please reply to [EMAIL PROTECTED]