== Loading modem driver chan_modem_i4l.so => (ISDN4Linux Emulated Modem Driver)
Dec  1 09:07:42 WARNING[5533]: chan_modem.c:727 mkif: Unable to open '/dev/ttyI0'
Dec  1 09:07:42 ERROR[5533]: chan_modem.c:956 load_module: Unable to register channel '/dev/ttyI0'
  == Unregistered channel type 'Modem'
Dec  1 09:07:42 WARNING[5533]: loader.c:345 ast_load_resource: chan_modem.so: load_module failed, returning -1
  == Unregistered channel type 'Modem'
Dec  1 09:07:42 WARNING[5533]: loader.c:391 load_modules: Loading module chan_modem.so failed!