[Freeswitch-users] Need help with T.38

Hello! My network configuration is: FAX -- Audiocodecs MP-104 (FXO) -- Freeswitch -- External SIP provider --- FAX When my Freeswitch worked in proxy_media mode there was no troubles with sending faxes. Sometimes ago I switched it to default mode and now I have many troubles with faxes. I have read wiki about mod_spandsp and t38 gateway, but in my situation I don't know from which number fax is sending and also to what number fax is sending. And there is no example in wiki what to do if FS acts only as proxy when sending fax. May somebody give me good example what should I configure to get faxes work? -- Regards, Boris