[maemo-developers] Is it possible to dump packets sent between the AP and cell modem?

[From: Jonathan Wilson]

I want to dump the isi/phonet packets being sent between the cellular modem 
and the AP so I can see the low level packet being sent for Cell Broadcast 
SMS and see just what data is being sent (and figure out if the issue is a 
bug in my code, a bug in the nokia telephony stack or an issue with what my 
carrier is sending as cell broadcast)