Hi all i have been succesfully using OpenH323 (oh323) for a few months. the versions are: asterisk CVS HEAD 19-07-2005, OpenH323 v1.13.5, PWlib v1.6.6, asterisk-oh323-0.7.2-pre1 I now have moved to Asterisk 1.2.4, so as per the directions i am using: Asterisk 1.2.4 pwlib_Mimas_patch2 openh323_Mimas_rc2 asterisk-oh323-0.7.3 The problem is that when asterisk starts it fails on loading the module [chan_oh323.so] => (InAccess Networks OpenH323 Channel Driver) == Parsing '/etc/asterisk/rtp.conf': Found == Parsing '/etc/asterisk/oh323.conf': Found Apr 5 14:01:04 NOTICE[4161]: chan_oh323.c:4821 reload_config: Ignoring unknown H.323 [general] keyword 'inBandDTMF', line 48. [1]WrapH323EndPoint::WrapH323EndPoint: Compile-time libraries OpenH323 v1.15.3, PWlib v1.8.7 Apr 5 14:01:04 ERROR[4161]: chan_oh323.c:5353 load_module: H.323 listener creation failed. Apr 5 14:01:04 WARNING[4161]: loader.c:414 __load_resource: chan_oh323.so: load_module failed, returning -1 == Cleaning up OpenH323 channel driver. Apr 5 14:01:04 WARNING[4161]: loader.c:554 load_modules: Loading module chan_oh323.so failed! but when i comment out the [codecs] section in oh323.conf i get this Apr 5 14:33:03 WARNING[4264]: chan_oh323.c:5008 reload_config: Category [codecs] not present in configuration file (oh323.conf). Apr 5 14:33:03 NOTICE[4264]: chan_oh323.c:5227 load_module: No codecs configured! Disabling H.323 channel driver. sometimes i also get a segmentation fault. Am i using the wrong versions of pwlib,h323? -- thanks, yusuf