INVITE not getting forwarded to the other SIP client even after both the clients get registered succesfully

What steps will reproduce the problem?
1. Sign in into the boghe clients. Registration successful (can be seen in the 
telepresence logs)
2. Add the other client as a contact using the SIP URI in the register request
3. Open the chat box, type in some text and press the button 'send text'

What is the expected output? What do you see instead?
expected: The INVITE reaching the other client.
actual: the INVITE not reaching the other client. Instead status 600 internal 
error occuring.

What version of the product are you using? On what operating system?
2.1.0

Please provide any additional information below.
Attaching the logs as well as the configuration file.

Pasting the uname -a output for your reference
root@computeNode150:/usr/local/sbin# uname -a
Linux computeNode150 3.2.0-52-generic #78-Ubuntu SMP Fri Jul 26 16:21:44 UTC 
2013 x86_64 x86_64 x86_64 GNU/Linux

Original issue reported on code.google.com by JayaKuma...@gmail.com on 23 Sep 2013 at 12:04

Attachments:

[console logs.txt](https://storage.googleapis.com/google-code-attachments/telepresence/issue-10/comment-0/console logs.txt)
telepresence.cfg

qiupin / telepresence

INVITE not getting forwarded to the other SIP client even after both the clients get registered succesfully #10