atcomsystems.ca/forum Forums Other TDM Phone Systems Sprint - Tadiran Telephones & Systems Anyone have IP UGW behind firewall?

Currently Im trying to add T209 MGCP (setup with public IP no firewall) from external and I had been reading all this discussion but still no luck for me.
My IPXOffice is installed behind Checkpoint Firewall (no Sentinel) with 192.168.10.200 for signaling and 192.168.10.201 for media. The signal working but not the voice.

From wireshark I seen signaling go through public IP and forwarding to 192.168.10.200 port 2427 but the voice is trying to reach internal ip 192.168.10.200 16400 (RTP G729) instead of the public ip. Is this normal? or Did I do wrong setting on the UGW?
I use port mirroring to tap the T209M activity

Is anybody able to work on those discussion

Thanks a lot
Dendiko