<html><head><meta http-equiv="Content-Type" content="text/html charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><div class=""><span class="" style="font-family: -webkit-standard; font-size: medium; background-color: rgb(255, 255, 255);">Hello list, </span></div><div class=""><span class="" style="font-family: -webkit-standard; font-size: medium; background-color: rgb(255, 255, 255);"><br class=""></span></div><div class=""><span class="" style="font-family: -webkit-standard; font-size: medium; background-color: rgb(255, 255, 255);">In my set up Freeswitch acts as fax originator, so an image is being processed and sent by FS. I do not receive any fax, so all my questions/issues are related to sending it. All fax is over IP.</span></div><div class=""><span class="" style="font-family: -webkit-standard; font-size: medium; background-color: rgb(255, 255, 255);"><br class=""></span></div><div class=""><span class="" style="font-family: -webkit-standard; font-size: medium; background-color: rgb(255, 255, 255);">First a question - how to understand if Freeswitch is sending in T.38? Why do I always see T.30 FLOW in log even if in SDP is mentioned T.38? I do see some "T.38 rxfax set to 0/txfax set to N", I understand that rx is receive and tx is transmit, but why any other log strings shows T.30 FLOW?</span></div><div class=""><span class="" style="font-family: -webkit-standard; font-size: medium; background-color: rgb(255, 255, 255);"><br class=""></span></div><div class=""><span class="" style="font-family: -webkit-standard; font-size: medium; background-color: rgb(255, 255, 255);">And the issue - sometimes when I initiate fax I get </span></div><div class=""><span class="" style="font-family: -webkit-standard; font-size: medium; background-color: rgb(255, 255, 255);">-----------------</span></div><div class=""><span class="" style="font-family: -webkit-standard; font-size: medium; background-color: rgb(255, 255, 255);">Codec RAW Signed Linear (16 bit) encoder error </span></div><div class=""><span class="" style="font-family: -webkit-standard; font-size: medium; background-color: rgb(255, 255, 255);">mod_g729.c:102 This codec is only usable in passthrough mode! </span></div><div class=""><span class="" style="font-family: -webkit-standard; font-size: medium; background-color: rgb(255, 255, 255);">-----------------</span></div><div class=""><span class="" style="font-family: -webkit-standard; font-size: medium; background-color: rgb(255, 255, 255);">I can't understand why it's happening as it occurs from time to time, but it always happens before Freeswitch makes re-invite to initiate a T.38 session. </span></div><div class=""><font face="-webkit-standard" size="3" class=""><span class="" style="background-color: rgb(255, 255, 255);">I suppose that's because I have no license for g729, but the supplier side negotiates it before FS has chance to re-invite. But why does it work with same SDP in other times?</span></font></div><div class=""><font face="-webkit-standard" size="3" class=""><span class="" style="background-color: rgb(255, 255, 255);">Does it have sense to exclude g729 for the initial codec negotiation, or g729 is essential to keep T.38 working? What shall I do in case of Asia where everything is on g729,? Maybe it has sense to purchase a license - but why then it works unstable right now, I mean, why does it even work if it requires mod_g729_com? Or it doesn't? I'm really confused on all that.</span></font></div><div class=""><font face="-webkit-standard" size="3" class=""><span class="" style="background-color: rgb(255, 255, 255);"><br class=""></span></font></div><div class=""><font face="-webkit-standard" size="3" class=""><span class="" style="background-color: rgb(255, 255, 255);"><br class=""></span></font></div><div class=""><font face="-webkit-standard" size="3" class=""><span class="" style="background-color: rgb(255, 255, 255);">Thanks in advance!</span></font></div></body></html>