1x internet problems or internet all together

[gsessons]

Ever since I updated my ppc 6700 to the new radio version, when I'm off the internet for a while it completly shuts off and it won't let me log back on. It gives me a message (Cannot Connect Dial: #777... The answering modem has disconnected. To check your connection settings and change them if needed, tap settings.)........When I look on my Comm Manager screen the active data service is always not highlighted after. Then if i soft reset my device the internet works again until i stop useing it for a while and then it does the same thing all over. Then If I want to use the internet I have to soft reset my phone again. "can anyone tell me wants wrong and how can I fix it)