Where are packets transferred during a phone call

Hello, I am trying to fully understand where packets are received in asterisk during a phone call and where they are located when they are sent out to the destined softphone location. I am not talking about packet transfer when initializing a connection, I am referring to when you are talking to another individual in a phone call and packets are being sent back and forth when the individuals are talking. I am looking for source code location and explanation as well as documentation.

This is is not a developer resource. You need to use the mailing list or IRC channel.

However the answer to your question will be too long for anyone to give it for free, so you really need to be more specific about the problem you are trying to solve, or you need to look into the source code.