TURN Server Behind Firewall

Hello,

i published a TURN Server ( LAN IP : 192.168.1.10 ) via ASA (using public IP : 10.10.10.2)
and allowed TCP/UDP ports 3478 & 3479.

i.e, TURN (192.168.1.10) --- ASA ---10.10.10.2 (internet ip)

- when one voip client from behind symetric NAT and one client from our office LAN can able to register to VOIP server with TURN settings

ex: for client behind symetric NAT  -  10.10.10.2 (TURN Server )
      for Client in LAN                        -   192.168.1.10 (TURN Server)

dialing from both clients is working. but, after call establishment there is only one way media.
i.e, from LAN voip Client to client behind symetric NAT.


when i use wireshark to capture packets. TURN Server is not forwarding packets to Public Client (to client behind NAT using it's Published IP address i.e 10.10.10.2 ), insted it's forwarding packets to Firewall (ASA - 10.10.10.1)

can any body help me to resolve this issue.


Thanks,
Rafi