On Tue, Jun 26, 2012 at 11:39 AM, Scott Huang <gyration.huang@gmail.com> wrote:

Hi Dario,
   Thanks very much,  now i can use 1.8.0.

   Do you kow how to let wireshark to decode more GSM signaling message from openbts,
What I can see is only LAPDm , any comments? Thanks very much!

What you can see is everything ws is able to decode. Switch to trunk to check if gsmtap has more support.
I can see often an update for the gsmtap dissector when issuing svn update, so I strongly suggest you to checkout trunk version if you want to work heavily with gsmtap.