Newbie on Asterisk... Is this box suitable for Asterisk?

Hi! I am trying to find a small linux box to be used for developing Asterisk application.
(so afterwards it can sit nicely right besides landline telephone)

I found this little device GuruPlug…etc
but Asterisk requires PCI board. Is GuruPlug suitable or it requires external board
to plug PCI board. If you know a better hardware device ( small, compact), please let me know.

Much appreciated.

Git Trac