[Freeswitch-users] t38-passthru sofia param

[Spencer Thomason]

Hello all,
I have a few questions regarding the t38-passthru sofia param.  One of the ways we are using FreeSWITCH is as a simple B2BUA in our SBCs.  The topology looks like this:

                                             Freeswitch
                                                /\          \/
FS and Asterisk boxen -> OpenSIPS -> PSTN

The Freeswitch instance is setup with inbound late negotiation and bypass media = true and the dialplan consists of a very simple bridge statement that sends a call back to the proxy.  

The problem is that when someone sends a fax and the GW send a t.38 reINVITE, Freeswitch is sending the original SDP (PCMU in this case) back to Leg A and the fax then fails using PCMU.  Is this parameter needed when bypass media is already enabled?

Thanks,
Spencer