cant manually connect modem in RH8.0

Dear all

I am very new to using RH8.0. while trying to connect thru dial-up manually the modem disconnect immediately after hand shaking. though otherwise i get connected  on using the  gnome desktops network option and gets immediately connected. I am interested in manually connecting to the net.

My modem is Xlanbit 33.6 voice fax modem. Which connects perfectly in  MS windows and like i already informed in gnomes network option. i am attaching the error log file. i am using the ppp-on command for connection. i suspect the problem could be with the config of  ppp-on-dialer of RH8.0
 
I have already spend a lot of time & eneergy on this problem. your help is now needed.

pradeepc

Jun  1 12:35:06 localhost syslogd 1.4.1: restart.
Jun  1 12:59:57 localhost pppd[1038]: pppd 2.4.1 started by root, uid 0
Jun  1 12:59:57 localhost kernel: CSLIP: code copyright 1989 Regents of the 
University of California
Jun  1 12:59:57 localhost kernel: PPP generic driver version 2.4.2
Jun  1 12:59:58 localhost chat[1039]: send (AT^M)
Jun  1 12:59:58 localhost chat[1039]: expect (OK)
Jun  1 12:59:58 localhost chat[1039]: AT^M^M
Jun  1 12:59:58 localhost chat[1039]: OK
Jun  1 12:59:58 localhost chat[1039]:  -- got it 
Jun  1 12:59:58 localhost chat[1039]: send (ATDT172233^M)
Jun  1 12:59:58 localhost chat[1039]: expect (/root)
Jun  1 12:59:58 localhost chat[1039]: ^M
Jun  1 13:00:23 localhost chat[1039]: ATDT172233^M^M
Jun  1 13:00:23 localhost chat[1039]: CONNECT 57600^M
Jun  1 13:00:23 localhost chat[1039]:  **********************  BHARAT SANCHAR 
NIGAM LIMITED ***********************^M
Jun  1 13:00:23 localhost chat[1039]: ^M
Jun  1 13:00:23 localhost chat[1039]: ***************** WELCOME TO NIB  KALYAN  
INTERNET SERVICES ****************^M
Jun  1 13:00:23 localhost chat[1039]: ^M
Jun  1 13:00:23 localhost chat[1039]:  *****************^IWISH YOU A VERY HAPPY 
NEW YEAR***********************^M
Jun  1 13:00:23 localhost chat[1039]: 
**************************************************************************** ^M
Jun  1 13:00:23 localhost chat[1039]: ^M
Jun  1 13:00:23 localhost chat[1039]: User Access Verification^M
Jun  1 13:00:23 localhost chat[1039]: ^M
Jun  1 13:00:43 localhost chat[1039]: alarm
Jun  1 13:00:43 localhost chat[1039]: Failed
Jun  1 13:00:43 localhost pppd[1038]: Connect script failed
Jun  1 13:00:44 localhost pppd[1038]: Exit.
Jun  1 13:07:44 localhost pppd[1048]: pppd 2.4.1 started by root, uid 0
Jun  1 13:07:45 localhost chat[1049]: timeout set to 10 seconds
Jun  1 13:07:45 localhost chat[1049]: abort on (\nBUSY\r)
Jun  1 13:07:45 localhost chat[1049]: abort on (\nNO ANSWER\r)
Jun  1 13:07:45 localhost chat[1049]: abort on (\nRINGING\r\n\r\nRINGING\r)
Jun  1 13:07:45 localhost chat[1049]: send (rAT^M)
Jun  1 13:07:45 localhost chat[1049]: expect (OK)
Jun  1 13:07:45 localhost chat[1049]: rAT^M^M
Jun  1 13:07:45 localhost chat[1049]: OK
Jun  1 13:07:45 localhost chat[1049]:  -- got it 
Jun  1 13:07:45 localhost chat[1049]: send (ATH0^M)
Jun  1 13:07:46 localhost chat[1049]: timeout set to 30 seconds
Jun  1 13:07:46 localhost chat[1049]: expect (OK)
Jun  1 13:07:46 localhost chat[1049]: ^M
Jun  1 13:07:46 localhost chat[1049]: ATH0^M^M
Jun  1 13:07:46 localhost chat[1049]: OK
Jun  1 13:07:46 localhost chat[1049]:  -- got it 
Jun  1 13:07:46 localhost chat[1049]: send (ATDT172233^M)
Jun  1 13:07:46 localhost chat[1049]: expect (CONNECT)
Jun  1 13:07:46 localhost chat[1049]: ^M
Jun  1 13:08:11 localhost chat[1049]: ATDT172233^M^M
Jun  1 13:08:11 localhost chat[1049]: CONNECT
Jun  1 13:08:11 localhost chat[1049]:  -- got it 
Jun  1 13:08:11 localhost chat[1049]: send (^M)
Jun  1 13:08:11 localhost pppd[1048]: Serial connection established.
Jun  1 13:08:11 localhost pppd[1048]: Using interface ppp0
Jun  1 13:08:11 localhost pppd[1048]: Connect: ppp0 <--> /dev/ttyS1
Jun  1 13:08:11 localhost /etc/hotplug/net.agent: assuming ppp0 is already up
Jun  1 13:08:42 localhost pppd[1048]: LCP: timeout sending Config-Requests 
Jun  1 13:08:42 localhost pppd[1048]: Connection terminated.
Jun  1 13:08:42 localhost pppd[1048]: Receive serial link is not 8-bit clean:
Jun  1 13:08:42 localhost pppd[1048]: Problem: all had bit 7 set to 0
Jun  1 13:08:42 localhost /etc/hotplug/net.agent: NET unregister event not 
supported
Jun  1 13:08:43 localhost pppd[1048]: Exit.