HI Simon and Jan
after enabed the H235 media encryption, openmcu and H323 ep in the same network were work well .
however , when they were in different networks，
1 . only audio PDU（200bytes）received at MCU , MCU can not receive video pdu（above 1000 bytes）.i am sure the ep had upload the audio and video packages .
2. the threads used for trasmit and receive data had been create , but no data send to H323 ep . some messages hint that PTLIB write Blocking ，but i don‘t know why , use fcntl() to set read/write NONBLOCKING , But not effective .
please help
thanks
gary
