I have updated to latest version of asterisk (should be 1.0.8) and compiled PWLib and OpenH323 already and also create channel for H323 after config It can call to H323 and/or SIP but when user try to recieve this appear and calling fail.
Warning!! channel.c: ast_channel_mak_compatible: No path to translate from H323/ip to H323/ext
Warning!! channel.c: ast_channel_mak_compatible: No path to translate from H323/ip to SIP/ext
What was happened with this?
i have the same problem by h323 to h323 and call foreward! 
You found a solution?
SIP to h323 is ok!
I use asterisk 1.2.14 with openh323 1.19.0.1, if a call come in with h323 and a call foreward is defined to go out with h323 i become the following error:
Jan 17 12:21:51 WARNING[32294]: channel.c:2752 ast_channel_make_compatible: No path to translate from H323/ip$192.168.100.33:2233/1339(-2033650) to H323/00XXXXXXXXXX-6(-2033650)
Jan 17 12:21:51 WARNING[32294]: app_dial.c:1603 dial_exec_full: Had to drop call because I couldn't make H323/ip$192.168.100.33:2233/1339 compatible with H323/00XXXXXXXXXX-6
If a call come in with SIP and go out with h323 all is ok.
But the external telephone gateway only speak h323!
Any idea?
nice … just keep bumping any thread with h323 in it !!