Probably your users might not be in the default context. To make call from one sip user to another both must be in same context. For testing purpose you may want to keep both of them in default context. In the user_name.xml<div>
file put context = default , this may solve your problem.<br><div><br><div class="gmail_quote">On Mon, Apr 15, 2013 at 11:20 AM, Navnath Sonavne <span dir="ltr">&lt;<a href="mailto:navnath.sonavne@yahoo.com" target="_blank">navnath.sonavne@yahoo.com</a>&gt;</span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div style="font-size:12pt;font-family:times new roman,new york,times,serif"><div><span style="font-size:12pt">Hi All,</span><br>
</div><div style="font-family:&#39;times new roman&#39;,&#39;new york&#39;,times,serif;font-size:12pt"><div style="font-family:&#39;times new roman&#39;,&#39;new york&#39;,times,serif;font-size:12pt"><div><div><div style="font-size:12pt;font-family:&#39;times new roman&#39;,&#39;new york&#39;,times,serif">
<div style="font-family:&#39;times new roman&#39;,&#39;new york&#39;,times,serif;font-size:12pt"><br></div><div><font face="times new roman, new york, times, serif" size="3">I have successfully </font><font face="times new roman, new york, times, serif">compiled</font><font face="times new roman, new york, times, serif" size="3"> and installed freeswitch on my Linux CentOS.</font></div>
<div style="font-style:normal;font-size:16px;background-color:transparent;font-family:&#39;times new roman&#39;,&#39;new york&#39;,times,serif"><font face="times new roman, new york, times, serif" size="3">I have registered two softphones of X-Lite in freeswitch with extension numbers are 1100 ,1101.</font></div>
<div style="background-color:transparent"><font face="times new roman, new york, times, serif">I have installed these softphones on two different machines of windows OS.</font></div><div style="background-color:transparent">
<font face="times new roman, new york, times, serif" size="3">I have created two XML dial plans for above extension numbers in usr/local/freeswitch/conf/directory/default.</font></div><div style="font-style:normal;font-size:16px;background-color:transparent;font-family:&#39;times new roman&#39;,&#39;new york&#39;,times,serif">
<font face="times new roman, new york, times, serif" size="3"><br></font></div><div style="background-color:transparent"><font face="times new roman, new york, times, serif" size="3">Now when i call 1101 from 1100 extension it did not establish a call.</font></div>
<div><font face="times new roman, new york, times, serif" size="3"><br></font></div><div style="font-style:normal;font-size:16px;background-color:transparent;font-family:&#39;times new roman&#39;,&#39;new york&#39;,times,serif">
<font face="times new roman, new york, times, serif" size="3">I know something is going wrong but what is it? I am not able to figure out.</font></div><div style="font-style:normal;font-size:16px;background-color:transparent;font-family:&#39;times new roman&#39;,&#39;new york&#39;,times,serif">
<font face="times new roman, new york, times, serif" size="3"><br></font></div><div style="font-style:normal;font-size:16px;background-color:transparent;font-family:&#39;times new roman&#39;,&#39;new york&#39;,times,serif">
<font face="times new roman, new york, times, serif" size="3">I request you all please help me to establish a call
 between 1100 and 1101.</font></div><div style="font-style:normal;font-size:16px;background-color:transparent;font-family:&#39;times new roman&#39;,&#39;new york&#39;,times,serif"><font face="times new roman, new york, times, serif" size="3"><br>
</font></div><div style="background-color:transparent"><font face="times new roman, new york, times, serif" size="3">FYI i am reading Freeswitch 1.0.6 by Anthony Minessale , Michael S. Collins , Darren Schreiber .</font></div>
<div style="font-style:normal;font-size:16px;background-color:transparent;font-family:&#39;times new roman&#39;,&#39;new york&#39;,times,serif"><font face="times new roman, new york, times, serif" size="3"><br></font></div>
<div style="font-style:normal;font-size:16px;background-color:transparent;font-family:&#39;times new roman&#39;,&#39;new york&#39;,times,serif"><font face="times new roman, new york, times, serif" size="3">I am
 attaching  1100.xml and 1101.xml files.</font></div><div style="font-style:normal;font-size:16px;background-color:transparent;font-family:&#39;times new roman&#39;,&#39;new york&#39;,times,serif"><font face="times new roman, new york, times, serif" size="3"><br>
</font></div><div style="font-style:normal;font-size:16px;background-color:transparent;font-family:&#39;times new roman&#39;,&#39;new york&#39;,times,serif"><font face="times new roman, new york, times, serif" size="3"><br>
</font></div><div style="font-style:normal;font-size:16px;background-color:transparent;font-family:&#39;times new roman&#39;,&#39;new york&#39;,times,serif"><font face="times new roman, new york, times, serif" size="3">Regards,</font></div>
<div style="font-style:normal;font-size:16px;background-color:transparent;font-family:&#39;times new roman&#39;,&#39;new york&#39;,times,serif"><font face="times new roman,
 new york, times, serif" size="3">Navnath.</font></div><div style="font-style:normal;font-size:16px;background-color:transparent;font-family:&#39;times new roman&#39;,&#39;new york&#39;,times,serif"><font face="times new roman, new york, times, serif" size="3"><br>
</font></div><div style="font-style:normal;font-size:16px;background-color:transparent;font-family:&#39;times new roman&#39;,&#39;new york&#39;,times,serif"><font face="times new roman, new york, times, serif" size="3"><br>
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