Hi, It seems the message was produced by OpenSSL. By default, pjsua will use TLS for secure signaling when SRTP is enabled. So basically you will have to set the pjsua TLS settings correctly (see --use-tls & --tls-*) and make sure the encryption method used is supported by the pjsua peer (can be a proxy or sip client). However you can also use SRTP without secure signaling, e.g: by specifying --srtp-secure 0 in the pjsua param. Regards, nanang On Sun, Jan 11, 2009 at 5:24 PM, waleed hassn <waleedot2003 at gmail.com> wrote: > hello all > i using centos 5 , and when i enabling srtp and then make call the > message " no shared cipher" appears , how can i set shared key between > two end > thanks > > _______________________________________________ > Visit our blog: http://blog.pjsip.org > > pjsip mailing list > pjsip at lists.pjsip.org > http://lists.pjsip.org/mailman/listinfo/pjsip_lists.pjsip.org >