Sysmocom sells pre-modified CP201x. You can use them as they are. "mostly" LAPDm and Paging messages is normal. You should also see call setups and SMSs as they are used, much less frequently depending on local traffic. :-) If you have your cellphone on the same ARFCN, you should be able to see your cell making/receiving calls and sending messages. B. On Fri, Dec 28, 2012 at 4:12 PM, Erich Dachleger <edachleger(a)yahoo.com>wrote;wrote: > I am also using CP210x from sysmocom and haven't modified it since I > thought it didn't require modification. > Is that wrong? > When I use burst_ind with unmodified CP210x I receive mostly LAPDM and > System 4 messages in wireshark. > Regards > Erich > >