Audio chat module in python

I need an audio based chat module.. i have implemented it using pyaudio library of python. It has a small problem it works fine on wireless internet on VoIP but when i connect the two computer through lan it generates a peculair noise during communication. Any one who can solve this problem in my code or he can implement an audio based chat module from scratch in python can contact me.. the chat should be done through VoIP over the internet.. ## Deliverables [login to view URL] requirements notice: As originally posted, this bid request does not have complete details. Should a dispute arise and this project go into arbitration "as is", the contract's vagueness might cause it to be interpreted against you, even though you were acting in good-faith. So for your protection, if you are interested in this project, please work-out and document the requirements onsite.