Hi,<br><br>        I have downloaded the source code of &quot;h323plus core&quot;(version:1.23.0) and &quot;PTlib&quot;(version:2.10.1) from the link: <br><br>     <i style="color: rgb(0, 0, 153);"><a href="http://www.h323plus.org/source/">http://www.h323plus.org/source/</a> </i><br>
<br>     on my X86 Desktop system running ubuntu 10.04<br><br><br>   I have followed the tutorial given at link<br><br>      <i style="color: rgb(0, 0, 153);"><a href="http://toncar.cz/openh323/tut/index.html">http://toncar.cz/openh323/tut/index.html</a></i><br>
<br>   I am able to compile both the source codes without any problems.<br><br>  Then I have downloaded and compiled &quot;oh323tut&quot; (version 1.1-1) source code from the link below:<br><br>       <i style="color: rgb(0, 0, 153);"><a href="http://toncar.cz/openh323/tut/files.html">http://toncar.cz/openh323/tut/files.html</a></i><br>
<br>  I have got simph323 installed on my system using <br><br>  <span style="color: rgb(0, 153, 0);">$ sudo apt-get install simph323</span><br style="color: rgb(0, 51, 0);"><br><br> Now when I try to run oh323tut application and simph323 application (in separete terminals) using the commands below:<br>
<br><span style="color: rgb(0, 153, 0);">$ ./oh323tut -f audio.wav -n -u 320</span><br style="color: rgb(0, 153, 0);"><span style="color: rgb(0, 153, 0);">$ simph323 -n -u 321 <a href="http://320@127.0.0.1:1820">320@127.0.0.1:1820</a></span><br>
<br>   I am getting the following problem:<br><br> <span style="color: rgb(255, 0, 0);">H323&gt; Could not open sound device Default - Check permissions or full duplex capability.</span><br><br><br>  Can anybody please help to  solve the above problem.<br>
<br><br> Regards<br>Abdul Moiz<br><tt></tt>