Hello Michael, First off all I would like to tell you that these were my findings and I liked some sort of confirmation but never received any answer. I only noticed similar error conditions mentioned in the forum especially when using cisco gateways for termination. When I adjusted the information in the h225 CS part during the terminalcapability set it suddenly did work well. So consider this solution like some ad hoc untested thing. When I come back to my office later next week I will look up the exact patch I made. Standardization? I am fighting since 802.3 with this. Here is some snappet from the manual... It has lots of more interesting information... E.16.2 H.225.0 Call signaling Description: Some H.225.0 v4 call signaling messages have been omitted in the table. Those missing messages shall be secured according to procedure II/III as well. The text in the table below corrects this error. [Begin Correction] H.225.0 Call Signaling message H.235 signaling fields authentication-only authentication & integrity non-repudiation Alerting-UUIE, CallProceeding-UUIE, Connect-UUIE, Setup-UUIE, Facility-UUIE, Progress-UUIE, Information-UUIE, ReleaseComplete-UUIE, Status-UUIE, StatusInquiry-UUIE, SetupAcknowledge-UUIE, Notify-UUIE cryptoTokens Procedure II/III procedure II/III procedure II/III [End Correction] 6.5.14 Annex D Section 2 – Specification Conventions Description: H.235v2 Annex D text and description in several places are not entirely precise on the integrity protection of call signaling messages. Q.931 is not properly addressed. This has led to confusion. The following addition provides the clarification. Section D.5 – Conventions Tjapko. -----Original Message----- From: openh323gk-users-admin@lists.sourceforge.net [mailto:openh323gk-users-admin@lists.sourceforge.net]On Behalf Of Zygmuntowicz Michal Sent: Jueves, 19 de Febrero de 2004 11:52 a.m. To: openh323gk-users@lists.sourceforge.net Subject: Re: Issue with H323 version 4 gateways If you could show an example of the original and the rewritten message we could have a better look what is wrong. It's not a problem to transcode the message in gnugk, so if we know exactly what is going on we can fix it. ----- Original Message ----- From: "iTS Consult@ncy" <itsc99@cantv.net> Sent: Wednesday, February 18, 2004 9:15 PM Maybe my previous mail was a little subtil. Look in the h245 Terminalcapabilityset. In this frame you will find a h225 CS part. This h323 message_body facility message reads facility(UUIE)" for version 4 and reads empty for a version 2 or 3. Whenever this condition exists the call will be terminated at the receiving endpoint after about 10 up to 30 seconds. I looked it up in the h323 v4 protocol description of the ITU manual. Every endpoint in a h323 circus that has this mismatch causes the mentioned problem. I created a temp fix by rewriting the message body part during call setup to the v4 standard when dealing with v4 endpoints in a softswitch and not in the gnugk. I simply can't write C++ I only analyse dumps ! Greetings, Tjapko. ------------------------------------------------------- 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@lists.sourceforge.net Archive: http://sourceforge.net/mailarchive/forum.php?forum_id=8549 Homepage: http://www.gnugk.org/ --- Incoming mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.590 / Virus Database: 373 - Release Date: 16/02/2004 --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.592 / Virus Database: 375 - Release Date: 18/02/2004 ------------------------------------------------------- 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_id56&alloc_id438&opÌk _______________________________________________ List: Openh323gk-users@lists.sourceforge.net Archive: http://sourceforge.net/mailarchive/forum.php?forum_id…49 Homepage: http://www.gnugk.org/
