Hello, I am trying to setup an asterisk box on a simple isdn line with a fritz card. The Capi4Linux drivers are installed and seem to work correct as I can connect to an ISP, have not tried it with ISDN4Linux yet as I read that CAPI has many advantages over i4l ... but I think I will do this next. Next I have compiled zaptel, libpri (are these really needed for a fritz card?) and asterisk and finally did 'make samples' as these are my first expierience with asterisk and wanted to try the demo context. To get it work with CAPI i have then installed the chan_capi.so driver from junghanns.net ... here some output from the cli. [chan_capi.so] => (Common ISDN API for Asterisk) == Parsing '/etc/asterisk/capi.conf': Found Feb 12 03:08:07 NOTICE[1024]: chan_capi.c:2338 mkif: ast_capi_pvt(43910906,43910906,demo,0x2,2) (1,2,64) (0)(0.800000/0.800000) 0 Feb 12 03:08:07 NOTICE[1024]: chan_capi.c:2338 mkif: ast_capi_pvt(43910906,43910906,demo,0x2,2) (1,2,64) (0)(0.800000/0.800000) 0 Feb 12 03:08:07 NOTICE[1024]: chan_capi.c:2694 load_module: this box has 1 capi controller(s) -- listening on contr1 CIPmask = 0x1fff03ff -- CAPI[contr1] supports DTMF -- CAPI[contr1] supports supplementary services > HOLD/RETRIEVE > TERMINAL PORTABILITY > ECT > 3PTY > CF > CD > MCID > CCBS > MWI > CCNR == Registered channel type 'CAPI' (Common ISDN API Driver (0.3.0) aLaw) [res_musiconhold.so] => (Music On Hold Resource) == Parsing '/etc/asterisk/musiconhold.conf': Found == Registered application 'MusicOnHold' == Registered application 'WaitMusicOnHold' == Registered application 'SetMusicOnHold' == Parsing '/etc/asterisk/enum.conf': Found Asterisk Ready. *CLI> -- started pbx on channel (callgroup=0)! Feb 12 03:08:19 WARNING[4101]: pbx.c:1778 ast_pbx_run: Channel 'CAPI[contr1/43910906]/0' sent into invalid extension 's' in context 'default', but no invalid handler -- CAPI Hangingup Feb 12 03:08:33 WARNING[5125]: pbx.c:1778 ast_pbx_run: Channel 'CAPI[contr1/43910906]/1' sent into invalid extension 's' in context 'default', but no invalid handler -- CAPI Hangingup -- started pbx on channel (callgroup=0)! Feb 12 03:08:47 WARNING[6149]: pbx.c:1778 ast_pbx_run: Channel 'CAPI[contr1/43910906]/2' sent into invalid extension 's' in context 'default', but no invalid handler -- CAPI Hangingup -- started pbx on channel (callgroup=0)! Feb 12 03:08:48 ERROR[3076]: chan_capi.c:1196 pipe_frame: wrote -1 bytes instead of 40 Any solution ?? bye bodo