Hi, I experienced similar problems and posted this a while ago and I think it is coming from a H323 protocol mismatch between version 2 and 4. I am not really sure about this. Bottom line: If you can hack into the code than be sure that you replace the empty with a facility or the facility with an empty TerminalCapabilitySet message to make it all happen. I have found this in the ITU h323 manual as a change in the latest v4 h323 protocol and they mention that there are problems with backward compatibility. Unfortunately I am not a coder myself just a dumpanalyser so if you can solve this issue than build it into the gnugk. Tjapko. -----Original Message----- From: openh323gk-users-admin@xxxxxxxxxxxxxxxxxxxxx [mailto:openh323gk-users-admin@xxxxxxxxxxxxxxxxxxxxx]On Behalf Of Pablo Salinas Sent: Jueves, 26 de Febrero de 2004 08:22 p.m. To: openh323gk-developer@xxxxxxxxxxxxxxxxxxxxx Cc: openh323gk-users@xxxxxxxxxxxxxxxxxxxxx Subject: Interoperability Issues Hi there, I have been trying the GNUGK Proxy extensively the past days. Hacking the code, I was able to establish a phone call from an unregistered Endpoint to a GW that is inside another GK's zone. That way, my proxy works only as a proxy (GW) and does not work as a GK. Check out the graph: Planet IP-Phone <------> GNUGK "Hacked" Proxy <-----> MAX TNT GW That way it worked ok for both fast start and non fast start procedures. After that I tried replacing the Planet IP-Phone with a Cisco GW. That is when I had the following problem: After the MAX TNT GW receives the "facility TerminalCapabilitySet" message, it responds with an "empty TerminalCapabilitySet" and after that sends a "ReleaseComplete" message, with ternination cause value == 42 (Switching Equipment Congestion). Find attached the messages flows for the 2 cases mentioned above. One thing that catched my attention was that for the IP-Phone, the first "OpenLogicalChannel" message is sent by the MAX TNT Gw. And for the other case, the Cisco GW is the first one to send an "OpenLogicalChannel" message. I am not an expert in the H323 protocol. So, if anyone could give me an idea of what is going on here, I would really appreciate your help. thanks in advance, Pablo Salinas --- Incoming mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.594 / Virus Database: 377 - Release Date: 24/02/2004 --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.594 / Virus Database: 377 - Release Date: 24/02/2004 ------------------------------------------------------- SF.Net is sponsored by: Speed Start Your Linux Apps Now. Build and deploy apps & Web services for Linux with a free DVD software kit from IBM. Click Now! http://ads.osdn.com/?ad_id=1356&alloc_id=3438&op=click _______________________________________________ List: Openh323gk-users@xxxxxxxxxxxxxxxxxxxxx Archive: http://sourceforge.net/mailarchive/forum.php?forum_id=8549 Homepage: http://www.gnugk.org/
