i've try configure TLS and zrtp in freeswitch, but i've problem with TLS, i've using tutorial from this website wiki.freeswitch about SIP_TLS. when i activated in my softphone (i'm use phonerlite) it say TLS registered, but there is no sound feedback. i try using echo test by calling 9196 but there is no sound feedback. but, if i'm use TCP or UDP , there is no problem with that, i can hear voice feedback when try call 9196. someone told me to use ssldump about the result is in attahcment in this email is there any configuration when wanna try using TLS? thanks.