Yes this is a big no no, forgive my ignorance I understand using SER as a proxy but if you are dealing with one server why run both SER and Ast? It's most likely confused because of the callid being the same. If you *really* wanted to you could media proxy via SER and potentially generate a second callid.. I tried doing this myself in a similar situation and realized it's more a pain than it's worth.. -----Original Message----- From: Alexander Hoffmann [mailto:alexander.hoffmann@netgenius.de] On Friday 14 January 2005 12:53, Klaus Darilion wrote: Thus it is absolutely ok if there is an INV from ISDN card1 -> going to SER -> returning to * -> terminated at ISDN card2. You can easily configure * to route calls like this, but it will complain about loops. If you comment out the loop detection in the source code (because this is not a loop here) then Asterisk will run into a deadlock. I googled for a solution and saw people discussing similar issues and talking about hairpins. IMHO: What ever you call this, it stays a bug in ASTERISK. If you have any suggestions what to do, please let me know ! Thanks, Alex _______________________________________________ Serusers mailing list serusers(a)lists.iptel.org http://lists.iptel.org/mailman/listinfo/serusers