Salman, Muhammad wrote: > Thank you for your insight. It was really helpful. > > You suggested if I wanted to reduce the transmission jitter. Yes, that > is exactly what I wanted. But installing a master port between the > conference bridge and sound device doesn't seem to have any effect in > this case. The transmission jitter still remains the same. I am > attaching snap shots of the forward (pjsua) and reverse (some other sip > phone) RTP stream analysis using Wire Shark. I suspect PortAudio's thread has interfered with the clock's thread, since PortAudio's thread priority is set to real-time. Could you try increasing the pjmedia clock thread's priority to real-time too, in clock_thread.c? -benny > It seems that during transmission the delta for the forward stream > fluctuates in contrast to the reverse stream whose delta and jitter > remain pretty much the same. > > Thank you for your time.