Session Layer
Keeps conversation separate to prevent intermingling of data
Set Up Session
Checking of user credentials and assigning numbers to sessions to help identify them (student raises hand and teacher calls on them)
Tear Down Session
Ending of a session after the transfer is done or when the other party disconnects (teacher: does that answer your question? student: yes it does)
H.323
Used to set up, maintain, & tear down voice & video connection