dial-in error

Hi,

I have a RH9 running on my workstation and I tried to seup US robotics 56K
voice fax modem connection to my ISP. Whenever I connect to my ISP it is
unsuccessful. therefore I use the command tail to see trace the log. the
following is my log:
I have checked my UART and it uses 16550A.

=============/var/log/messages=========================
Jun 22 12:51:47 localhost ifup-ppp: Setting up a new /etc/ppp/peers/ppp0
config
file
Jun 22 12:51:47 localhost ifup-ppp: pppd started for ppp0 on /dev/ttyS1 at
11520
0
Jun 22 12:51:48 localhost pppd[2166]: pppd 2.4.1 started by root, uid 0
Jun 22 12:51:48 localhost kernel: CSLIP: code copyright 1989 Regents of the
Univ
ersity of California
Jun 22 12:51:48 localhost kernel: PPP generic driver version 2.4.2
Jun 22 12:51:49 localhost wvdial[2190]: WvDial: Internet dialer version 1.53
Jun 22 12:51:49 localhost wvdial[2190]: Initializing modem.
Jun 22 12:51:50 localhost wvdial[2190]: Sending: ATZ
Jun 22 12:51:50 localhost wvdial[2190]: ATZ
Jun 22 12:51:50 localhost wvdial[2190]: OK
Jun 22 12:51:50 localhost wvdial[2190]: Modem initialized.
Jun 22 12:51:50 localhost wvdial[2190]: Sending: ATDT65379800
Jun 22 12:51:50 localhost wvdial[2190]: Waiting for carrier.
Jun 22 12:51:50 localhost wvdial[2190]: ATDT65379800
Jun 22 12:52:18 localhost wvdial[2190]: CONNECT 45333/ARQ
Jun 22 12:52:18 localhost wvdial[2190]: Carrier detected. Chatmode
finished.
Jun 22 12:52:18 localhost pppd[2166]: Serial connection established.
Jun 22 12:52:18 localhost pppd[2166]: Using interface ppp0
Jun 22 12:52:18 localhost pppd[2166]: Connect: ppp0 <--> /dev/ttyS1
Jun 22 12:52:18 localhost /etc/hotplug/net.agent: assuming ppp0 is already
up
Jun 22 12:52:49 localhost pppd[2166]: LCP: timeout sending Config-Requests
Jun 22 12:52:49 localhost pppd[2166]: Connection terminated.
Jun 22 12:52:49 localhost /etc/hotplug/net.agent: NET unregister event not
supported
Jun 22 12:52:49 localhost pppd[2166]: Hangup (SIGHUP)
Jun 22 12:52:49 localhost pppd[2166]: Exit.
==================end============================= =====


=====================PPP-DEBUG.LOG==============================
Jun 29 10:01:00 localhost pppd[2189]: pppd 2.4.1 started by root, uid 0
Jun 29 10:01:20 localhost kernel: divert: not allocating divert_blk for
non-ethernet device ppp0
Jun 29 10:01:20 localhost pppd[2189]: Connect: ppp0 <--> /dev/ttyS1
Jun 29 10:01:21 localhost /etc/hotplug/net.agent: assuming ppp0 is already
up
Jun 29 10:01:52 localhost pppd[2189]: Connection terminated.
Jun 29 10:01:52 localhost kernel: divert: no divert_blk to free, ppp0 not
ethernet
Jun 29 10:01:52 localhost /etc/hotplug/net.agent: NET unregister event not
supported
=========================END====================== ==================
I am new to linux and really have no idea what the above log mean..
can you help me take a look and figure what is wrong...

thank you