The invention relates to a system and method for controlling an aspect of a communication session. The method processes the session through a subscriber terminal that also controls a separate a video signal. The method comprises: analyzing call data for the session to determine whether a calling party can initiate the session with a called party; if the calling party is allowed to initiate the session, sending information about the session to the terminal; generating a GUI session from the information for a video monitor connected to the terminal; allowing further processing of the session through the terminal through the GUI session; if a command is received to further process the session, providing a message to the network to process the command; and if a command is received to change an aspect of the video signal, providing an appropriate message to the terminal to process the command.