The problem of no site opening in KPPP has been resolved, although I don't know if the method is right.
After a bootup, the 'Network Device Control' has to be called up first to activate any of the dialup accounts ppp0, ppp1, ppp2 ....The modem will dial to the ISP and then the sites open. The connection should be now closed to run kppp.
Closing this connection is also tricky as it is never shown as 'active', either the RedHat software has bugs or its the third party modem driver problem, I really don't know. So a trick method was tried and it works.
The 'activate' button is clicked for the same active connection and that interrupts the modem to start dialing again. As it starts dialling, click the 'activate' button again and this time the window waits. Immediately click on the 'X' button on the top right corner to simply close the window. This stops the dialing. Come out of 'N D C' and then use kppp as if nothing ever was wrong, till you reboot again.
Regards,
Rony.