Hi all, This is regarding the performance of video downgrade (removal of video part)from the 1-st call leg. During the closing of video port ,video stream the code enter conference.c conference.c PJ_DEF(pj_status_t) pjmedia_conf_remove_port( pjmedia_conf *conf, unsigned port ) pj_mutex_lock(conf->mutex); The lock is used by clock,media. Some time it takes 4 to 6 sec to acquire the lock.This is occurs at random time.Some time it takes milli sec Any way to solve this issue. Thanks in advance to your valuable time. Thanks P.S.Manika vasagam -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20151023/7f951d29/attachment.html>