Hi,
I've got two Obi202's sitting on my desk, and both are having issues with T38. One is on FW 3.0.0 (Build: 3184M), and the other is on latest. The problem is (verified via tcpdump/wireshark) that the obi202 doesn't seem to reliable reinvite for T38. I've configured these to go against two different FreeSWITCH servers (one on the LAN, and the other on a dedicated machine in a remote datacenter). The T38 re-invite does occur sometimes against the LAN server, and it never happens against the remote server.
When testing against the remote server, I've verified on the LAN side with tcpdump that the T38 invite isn't happening (ie, it isn't a firewall munching packets). Anybody have any ideas on how to resolve this? I've really been hoping the Obi202 can replace the venerable spa2102...