I disabled the rtpproxy modules and the error is gone Thanks Daniel ! De : Daniel-Constantin Mierla &lt;miconda(a)gmail.com&gt; Envoyé : mercredi 22 août 2018 13:58 À : Kamailio (SER) - Users Mailing List &lt;sr-users(a)lists.kamailio.org&gt;rg>; Nicolas Breuer &lt;Nicolas.Breuer(a)belcenter.biz&gt; Objet : Re: [SR-Users] Error at startup Hello, are you using both rtpproxy and rtpengine in your kamailio.cfg? I guess both try to export same variable, the second time it prints error due to the conflict. Cheers, Daniel On 22.08.18 13:06, Nicolas Breuer wrote: Hello, How can i clear this error ? Aug 22 13:05:56 proxy1 kamailio: ERROR: <core> [core/pvapi.c:228]: pv_table_add(): pvar [rtpstat] already exists Aug 22 13:05:56 proxy1 kamailio: ERROR: <core> [core/pvapi.c:513]: register_pvars_mod(): failed to register pseudo-variable <rtpstat> for module rtpproxy _______________________________________________ Kamailio (SER) - Users Mailing List sr-users@lists.kamailio.org<mailto:sr-users@lists.kamailio.org> https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users -- Daniel-Constantin Mierla -- www.asipto.com<http://www.asipto.com> www.twitter.com/miconda<http://www.twitter.com/miconda> -- www.linkedin.com/in/miconda<http://www.linkedin.com/in/miconda> Kamailio World Conference -- www.kamailioworld.com<http://www.kamailioworld.com>