I am trying to connect two SJPhones with SIP server. And i need to redirect the RTP packets through the SIP server. When i am doing this, i have three PCs one is for Asterisk server. On another PCs two SJPhones are running. When i am calling from SJPhone to SJphone i can get all SIP messages through wireshark. But i am not getting not even a single RTP packets. Can any one tell me what was the configuration mistake that i have done.