<div>Hi,</div>
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<div> I am using<strong> asterisk 1.8.9.3</strong> , <strong>I am using Spandsp FAX Driver: 20091228 123351</strong>, i will clearly explain my scenario.</div>
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<div>I am sending fax to a anlog fax machine which is connected to mediatrix analog gateway. say the analog fax extension is 18260.</div>
<div>I have enabled the fax mode , T.38 codec, clear channel codec , cng tone everything in my analog gateway. while sending a fax from asterisk to the analog fax extension(18260 this extension is registered in asterisk) , I am using SendFax dialplan application for sending fax , most of the time i got success message with fax send status <font color="#009900"><strong>success</strong></font> and my anlog fax machine also receives the fax and printing it. <font color="#cc0000"><strong>but some time i am getting a error that </strong></font></div>
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<div><strong><font color="#ff0000">"coud not generate CNG tone in channel sip/18260"</font>.</strong> i saw this error in asterisk CLI. i want to know whether this issue in my asterisk side or in my gateway side<strong>. <font color="#ff0000">why asterisk not able to generate the CNG tone on this channel.</font></strong><br>
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<div>second thing is in my sip.conf for fax I have enabled </div>
<div><strong><font color="#009900">t38pt_udptl = yes,fec,maxdatagram=400 </font></strong></div>
<div><strong><font color="#009900">faxdetect = yes </font></strong></div>
<p><strong><font color="#000000">I want to know which error correction i can use whether <font color="#006600">FEC</font> or <font color="#006600">Redundancy</font> so that i can get maximun throughput while sending fax from my asterisk</font></strong></p>
<div><font color="#000000"><strong>In my res_fax.conf </strong></font></div>
<div><strong><font color="#009900">maxrate=14400</font></strong></div>
<div><strong><font color="#009900">minrate=2400</font></strong></div>
<div><strong><font color="#009900">statusevents=yes</font></strong></div>
<div><strong><font color="#009900">modems=v17,v27,v29</font></strong></div>
<div><strong><font color="#009900">ecm=yes<br></font></strong></div>
<div> <font color="#000000">I need a desperate support from this forum to solve this issue </font><font color="#cc0000">(</font><font color="#ff0000">coud not generate CNG tone in channel )</font>.<br clear="all"><br>-- <br>
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<div><b style="COLOR:rgb(0,102,0)"><i>Thanks & Regards<br>Arunram.c<br></i></b><br></div>
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<div><strong><font color="#006600"><em>The Power of someone has the power to do something.. anything !!!!!!!!!!</em></font></strong></div><br>