asterisk users - Feb 2004 - Newbie: Chan_capi, early b3 in Italy

When I make a call and the other party is busy I do not hear anything 
but a free ringing phone.
Also, if I call a call center with a voice menu the phone keep ringing 
without any sign of life.

I tried early b3 with these ones but nothing change much:
http://www.voip-info.org/tiki-pagehistory.php?page=Asterisk+CAPI+readme&diff=2



My extensions are
----------------
[outgoing]
exten => 0,1,Goto(outgoing-isdn,s,1)

[outgoing-isdn]
exten => s,1,NoOp()
exten => _X.,1,Dial(CAPI/02555555:b${EXTEN}|30)

----------------

Any idea?
Is Asterisk compatible with Italian signal out of the box?

Thank you all in advance
mr