title: How to identify two legs of a sip call?
body: <p>I am developing a sip call tracking application. I have used Tag ID fields to connect the two call legs<br>
   of a call. But some times tag ids will not be same.</p>
  
  <p>What i have  done is  -</p>
  
  <p>The tag ids are associated to a corresponding Call ID. </p>
  
  <p>Is there any other field i need to consider for identifying legs(dialogues) of a call.    </p>
  
  <p><img src="https://i.stack.imgur.com/lkETC.png" alt="enter image description here">
   The above one is an exmple for 1 call with tag ids. Different colors used for two legs. And the only similarity i have got  a number <strong>3568450037</strong> in tag id's. <strong>10.10.10.120</strong> is the server ip.</p>
  
  <p>I have to find strong connection between the call legs. Please help me...
   And please suggest me some links to solve this issue..</p>
  
  <p>thank u...</p>