[asterisk-users] fax issue

[Arun Ram]

Hi,

   I am using asterisk 1.8.9.3 , I am using Spandsp FAX Driver: 20091228
123351, i will clearly explain my scenario.

I am sending  fax to a anlog fax machine which is connected to  mediatrix
analog gateway. say the analog fax extension is 18260.
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 success and my anlog fax machine also
receives the fax and printing it. but some time i am getting a error that

"coud not generate CNG tone in channel sip/18260". i saw this error in
asterisk CLI. i want to know whether this issue in my asterisk side or in
my gateway side. why asterisk not able to generate the CNG tone on this
channel.
second thing is in  my sip.conf for fax  I  have enabled
t38pt_udptl = yes,fec,maxdatagram=400
faxdetect = yes
I want to know which error correction i can use whether FEC or Redundancy
so that i can get maximun throughput while sending fax from my asterisk
In my res_fax.conf
maxrate=14400
minrate=2400
statusevents=yes
modems=v17,v27,v29
ecm=yes
 I need a desperate support  from this forum to solve this issue (coud not
generate CNG tone in channel ).
-- 
*Thanks & Regards
Arunram.c
*


*The Power of someone has the power to do something.. anything !!!!!!!!!!*
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