Hello Ronnie,
I created a smaller version of the original h323-plugin (nearly without 
h245) which uses your dissector for decoding fastStart elements. It 
should also register your dissector for h245 conversations, but I cannot 
test that.
Therefore I 'd like to have the attachements checked in the cvs-tree. We 
will need those changes later anyway, when we create our own 
h225-dissector. I will mail the plugin-source to anyone, who is 
interested (about 188 kByte zipped). It is also necessary to change the 
plugin api, but because this is only for testing, I recommend to check 
them not in.
I tested your dissector, and as far as I can see, it already decodes 
fastStart elements without any errors. However all fastStart elements 
start with dissect_h245_OpenLogicalChannel() so I can only tell you, 
that at least this function and its dependencies seem to be OK.
Very good work.
Regards,
Lars
Index: ethereal/packet-h245.c
===================================================================
RCS file: /cvsroot/ethereal/packet-h245.c,v
retrieving revision 1.10
diff -u -r1.10 packet-h245.c
--- ethereal/packet-h245.c	8 Jul 2003 11:39:45 -0000	1.10
+++ ethereal/packet-h245.c	8 Jul 2003 16:00:56 -0000
@@ -19250,7 +19250,7 @@
 		dissect_h245_EncryptionSync },
 	{ NULL, 0, 0, NULL }
 };
-static int
+int
 dissect_h245_OpenLogicalChannel(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree)
 {
 	offset=dissect_per_sequence(tvb, offset, pinfo, tree, hf_h245_OpenLogicalChannel, ett_h245_OpenLogicalChannel, OpenLogicalChannel_sequence);
@@ -19995,7 +19995,7 @@
 			dissect_h245_IndicationMessage },
 	{ 0, NULL, 0, NULL }
 };
-static void
+void
 dissect_h245_MultimediaSystemControlMessage(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
 {
 	proto_item *it;/* packet-h245.h
 * Routines for H.245 packet dissection
 * 2003  Ronnie Sahlberg
 *
 * $Id:  $
 *
 * Ethereal - Network traffic analyzer
 * By Gerald Combs <gerald@xxxxxxxxxxxx>
 * Copyright 1998 Gerald Combs
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */
extern void dissect_h245_MultimediaSystemControlMessage(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree);
extern int dissect_h245_OpenLogicalChannel(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree);