What Dr. Harris Taught

This week's lecture was about Session Iniciation Protocol. He showed 
sip session flow example with SIP trapezoid. He also showed SIP message 
format, and registration with the SIP registrar. He showed 
communication with or without Proxy.

Second lecture in the week talked about SIP conferencing. He detailed 
the star network that is formed while conferencing.
What I Learned

I looked at RFC 3665 to understand the registration process and basic 
call flows.