Hello, 1.5 is no longer a good choice for TLS. Use kamailio_3.0 branch from git (soon will be 3.0.2). I just returned from SIPit and I tested there a lot TLS. Besides multiparty testing, all automatic TLS tests were running with Kamailio 3.0 branch for several days. 1.5 has on old implementation inherited (actually is more or less the same) from the time of openser 1.0. In 3.0 the implementation is completely refurbished, coming from the ser branch. You have TLS as a module, you do not need to recompile everything. The configuration is more flexible, the implementation is far more better. Besides all of these, Andrei committed yesterday asynchronous TLS support, that will be in 3.1.0, but using the same cfg architecture like in 3.0.x, with an extra param: tcp_async=yes in config. Cheers, Daniel On 5/21/10 4:50 PM, Henning Westerholt wrote: -- Daniel-Constantin Mierla Kamailio (OpenSER) Advanced Training Miami, Fl, USA - June 21-23, 2010 http://www.asipto.com/index.php/kamailio-advanced-training/