the pix firewall supports the secure use of h.323 version 2. h.323 is a suite of protocols defined by the international telecommunication union (itu) for multimedia conferences over lans. some of the features provided include:

    · fast connect or fast start procedure for faster call setup

    · h.245 tunneling for resource conservation, call synchronization, and reduced set up time

    · call redirection · conferencing—the conference is not established until both endpoints agree to participate