I can connect in Win95 but can't in Debian 2.0. Below is that part of plog:
May 10 05:53:00 debian pppd[232]: Connection terminated. May 10 05:53:29 debian pppd[232]: Hangup (SIGHUP) May 10 05:53:29 debian pppd[232]: Exit. May 10 05:53:52 debian pppd[247]: pppd 2.3.5 started by root, uid 0 May 10 05:53:53 debian chat[248]: abort on (BUSY) May 10 05:53:53 debian chat[248]: abort on (NO CARRIER) May 10 05:53:53 debian chat[248]: abort on (VOICE) May 10 05:53:53 debian chat[248]: abort on (NO DIALTONE) May 10 05:53:53 debian chat[248]: abort on (NO ANSWER) May 10 05:53:53 debian chat[248]: send (ATZ^M) May 10 05:53:53 debian chat[248]: expect (OK) May 10 05:54:12 debian chat[248]: ATZ^M^M May 10 05:54:12 debian chat[248]: OK May 10 05:54:12 debian chat[248]: -- got it May 10 05:54:12 debian chat[248]: send (ATDT8888^M) May 10 05:54:12 debian chat[248]: expect (CONNECT) May 10 05:54:12 debian chat[248]: ^M May 10 05:54:39 debian chat[248]: ATDT8888^M May 10 05:54:39 debian chat[248]: CONNECT May 10 05:54:39 debian chat[248]: -- got it May 10 05:54:39 debian chat[248]: send (\d) May 10 05:54:40 debian pppd[247]: Serial connection established. May 10 05:54:41 debian pppd[247]: Using interface ppp0 May 10 05:54:41 debian pppd[247]: Connect: ppp0 <--> /dev/ttyS2 May 10 05:54:41 debian pppd[247]: sent [LCP ConfReq id=0x1 <asyncmap 0x0> <magic 0x64ff> <pcomp> <accomp>] May 10 05:54:41 debian pppd[247]: rcvd [LCP ConfReq id=0x13 <mru 1500> <asyncmap 0xa0000> <auth pap> <pcomp> <accomp> < 11 04 05 dc> < 13 03 01>] May 10 05:54:41 debian pppd[247]: sent [LCP ConfRej id=0x13 < 11 04 05 dc> < 13 03 01>] May 10 05:54:42 debian pppd[247]: rcvd [LCP ConfReq id=0x14 <mru 1500> <asyncmap 0xa0000> <auth pap> <pcomp> <accomp>] May 10 05:54:42 debian pppd[247]: sent [LCP ConfAck id=0x14 <mru 1500> <asyncmap 0xa0000> <auth pap> <pcomp> <accomp>] May 10 05:54:44 debian pppd[247]: sent [LCP ConfReq id=0x1 <asyncmap 0x0> <magic 0x64ff> <pcomp> <accomp>] May 10 05:54:45 debian pppd[247]: rcvd [LCP ConfAck id=0x1 <asyncmap 0x0> <magic 0x64ff> <pcomp> <accomp>] May 10 05:54:45 debian pppd[247]: sent [LCP EchoReq id=0x0 magic=0x64ff] May 10 05:54:45 debian pppd[247]: sent [PAP AuthReq id=0x1 user="vip" password="vip"] May 10 05:54:48 debian pppd[247]: sent [PAP AuthReq id=0x2 user="vip" password="vip"] May 10 05:54:49 debian pppd[247]: rcvd [LCP ConfReq id=0x15 <mru 1500> <asyncmap 0xa0000> <auth pap> <pcomp> <accomp> < 11 04 05 dc> < 13 03 01>] May 10 05:54:49 debian pppd[247]: sent [LCP ConfReq id=0x2 <asyncmap 0x0> <magic 0x7df4> <pcomp> <accomp>] May 10 05:54:49 debian pppd[247]: sent [LCP ConfRej id=0x15 < 11 04 05 dc> < 13 03 01>] May 10 05:54:49 debian pppd[247]: rcvd [LCP ConfReq id=0x16 <mru 1500> <asyncmap 0xa0000> <auth pap> <pcomp> <accomp>] May 10 05:54:49 debian pppd[247]: sent [LCP ConfAck id=0x16 <mru 1500> <asyncmap 0xa0000> <auth pap> <pcomp> <accomp>] May 10 05:54:49 debian pppd[247]: rcvd [LCP ConfAck id=0x2 <asyncmap 0x0> <magic 0x7df4> <pcomp> <accomp>] May 10 05:54:49 debian pppd[247]: sent [LCP EchoReq id=0x0 magic=0x7df4] May 10 05:54:49 debian pppd[247]: sent [PAP AuthReq id=0x3 user="vip" password="vip"] May 10 05:54:49 debian pppd[247]: rcvd [LCP EchoRep id=0x0 magic=0x0] May 10 05:54:52 debian pppd[247]: sent [PAP AuthReq id=0x4 user="vip" password="vip"] May 10 05:54:52 debian pppd[247]: rcvd [PAP AuthAck id=0x3 ""] May 10 05:54:52 debian pppd[247]: Remote message: May 10 05:54:52 debian pppd[247]: sent [IPCP ConfReq id=0x1 <addr 0.0.0.0> <compress VJ 0f 01>] May 10 05:55:01 debian last message repeated 3 times May 10 05:55:02 debian pppd[247]: rcvd [IPCP ConfReq id=0x0 <addr 61.129.32.136>] May 10 05:55:02 debian pppd[247]: sent [IPCP ConfAck id=0x0 <addr 61.129.32.136>] May 10 05:55:04 debian pppd[247]: sent [IPCP ConfReq id=0x1 <addr 0.0.0.0> <compress VJ 0f 01>] May 10 05:55:10 debian last message repeated 2 times May 10 05:55:12 debian pppd[247]: rcvd [IPCP ConfReq id=0x0 <addr 61.129.32.136>] May 10 05:55:12 debian pppd[247]: sent [IPCP ConfAck id=0x0 <addr 61.129.32.136>] May 10 05:55:13 debian pppd[247]: sent [IPCP ConfReq id=0x1 <addr 0.0.0.0> <compress VJ 0f 01>] May 10 05:55:19 debian last message repeated 2 times May 10 05:55:19 debian pppd[247]: sent [LCP EchoReq id=0x1 magic=0x7df4] May 10 05:55:22 debian pppd[247]: IPCP: timeout sending Config-Requests May 10 05:55:22 debian pppd[247]: sent [LCP TermReq id=0x3 "No network protocols running"] May 10 05:55:25 debian pppd[247]: sent [LCP TermReq id=0x4 "No network protocols running"] May 10 05:55:28 debian pppd[247]: Connection terminated. May 10 05:55:45 debian pppd[247]: Terminating on signal 15. May 10 05:55:49 debian pppd[247]: Terminating on signal 15. May 10 05:55:49 debian pppd[247]: Exit.