Jan, Chih Wei? Can somebody help me putting back the functionality in version 2.03 as described in document http://www.openh323.org/pipermail/openh323/1999-July/000963.html Strangely, it says that the ASN parser encodes 8x 01 00. Maybe it did then, but it does not now. It encodes it as 8x 00. (x is the choice number). So something seems to be changed. But this has been though about before. The ASN parser should encode 8x 01 00 but trace analysis (etherreal I have the trace available) shows only the first 2 bytes are encoded with the last version of gnugk 2.03. ( Like 8x 00) 81 means the second after extension marker 01 means length of element 00 means that there is no information thus no next octet. 00 actual element content This mismatch causes problems when using TAPi or NM dialers when your terminating endpoint is using Cisco routers. For example the as5350. In your trace you see a function not supported or a drq after a normal connection that gets immediately disconnected (and CDR generated) because of the absence of the mentioned field. When you use terminating endpoints that does not deal with the facility message you will not run into any problems. It seems a bug in the X691 PER packet encoding rules for the TAPI dialler. I don't think that gnugk is wrong here but restoring the function as described in above docuyment will probably fix this problem when dealing with TAPI, NM and terminating Cisco's. I also would like to refer to a unanswered mail from Franz at http://sourceforge.net/mailarchive/forum.php?thread_id=1791553&forum_id=3079 that is describing exact the same error and shows the problem in the displayed trace. I don't see an answer here so I suggest that this issue is still open! Thanks, Tjapko- --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.488 / Virus Database: 287 - Release Date: 05/06/2003 ------------------------------------------------------- This SF.net email is sponsored by: Etnus, makers of TotalView, The best thread debugger on the planet. Designed with thread debugging features you've never dreamed of, try TotalView 6 free at www.etnus.com. _______________________________________________ List: Openh323gk-users@lists.sourceforge.net Archive: http://sourceforge.net/mailarchive/forum.php?forum_id=8549 Homepage: http://www.gnugk.org/