T.38 Fax Options and how to adjust them?

[rsvj]

I'm being suggested by bandwidth to adjust one of my T.38 options to a=T38FaxMaxDatagram:176.
However, I can't find where I need to make that adjusting in the Fusion/Fax application.
Looking at packet captures we are trying to setup T.38 with a max datagram of 400.
T38FaxMaxDatagram doesn't appear to be in the Defaults for Fax. Is this a variable I need to inject on the inbound route?

 

[agree]

400 is hardcoded in freeswitch. You can change the value in freeswitch mod_spandsp and recompile, but I would not recommend do so.
https://github.com/signalwire/frees...pplications/mod_spandsp/mod_spandsp_fax.c#L39