asterisk users - Mar 2010 - Dial timeout problem with OpenVox A1200P Card / FXS module

Hello all!

   I having some trouble with a OpenVox A1200P card equiped with 5 FXO 
and 7 FXS ports, all ok with FXO ports, but the FXS ones are having 
some strange problem:

   With a telephone connected to any FXS port, when i dial some 
extension number on this phone, i receive a busy signal.

   My platform is Linux Ubuntu 9.10, Asterisk 1.6 and 
openvox_dahdi-linux-complete-2.2.0.2+2.2.0.tar.gz from OpenVox.

   Any idea?

   Thanks in advance!

   Best Regards,

F?bio da Silva Cunha
fsc at vetorial.net
+55 53 8403 4217