Om-2008.8: Cannot make or receive calls

[Tim Coggins]

Using the released Om-2008.8 image I cannot make or receive phone
calls. When the phone boots I am asked to enter a PIN. This appears to
be accepted and I can send and receive SMS messages.

However when I try and make a call it fails with the message "No phone
call is possible. Reason GSM Phone is not registered. No network". No
connection information is displayed on the bar at the top. Everything
worked with 2007.2.

Has anyone got any suggestions?

Thanks,
Tim