Hi everybody, I am stuck for several days trying to receive a fax using T.38 Based on the instructions in the wiki, I use the following dialplan: <action application="answer" /> <action application="playback" data="silence_stream://2000"/> <action application=set data="fax_enable_t38=true"/> <action application=set data="fax_enable_t38_request=true"/> <action application="rxfax" data="/tmp/rxfax-${uuid}.tif"/> <action application="hangup"/> When I do that, when rxfax is executed, the following appears on the console: 2011-04-02 01:00:04.890173 [ERR] switch_core_session.c:1918 Invalid Application If I take out the t38 lines, rxfax behaves as expected, receiving the fax using ulaw. However, I would like to use t.38 instead, which is supported by my gateway. My scenario is: PSTN -> CISCO AS5400 from my provider -> Internet -> My Freeswitch. I have also tried connecting a fax to a Grandstream HT-502, with the same results. I get a INVITE (which don't mention anywhere T.38 in the sdp) and Freeswitch never issues a reINVITE asking to switch to t.38 My version of FS is: FreeSWITCH Version 1.0.head (git-24a9729 2011-03-11 13-00-55 -0600) Anybody can give me a clue on what could I be doing wrong???? Thanks in advance! Alex