Data transfer blocked? Reliance cdma mobile phone problem with Fedora.
 

I am using Fedora Core 1. Recently upgraded from RH9. My CDMA phone connected to a Reliance India Mobile connection was working fine after I connected it to a usb to serial cord which is an original accessory to the phone. That was with RH(. After the upgrade the pppd script works fine. The phone is detected by the usbmgr module and the connection is made. However no data is transferred and all ports appear to be blocked. Pinging brings in zero results and even pinging server numbers brings in no results (--.--.--.-- could not be found etc.) Firestarter is off. Firewall rules are off. What could be the problem. Thanks in advance.