Stephen,
I have a couple of questions on your contribution MTD-016. These are:
1. H.323 already has mechanisms for discovering the gatekeeper. Are you suggesting in your contribution that the terminal should discover the VLF instead of the visiting gatekeeper ? Or, are you assuming that the VLF is integrated in the visiting gatekeeper ?
2. In H.323, authentication of the terminal and the gatekeeper is done at the time of discovery. In fact, in H.323 all messages between the terminal and the gatekeeper can be authenticated and the message integrity preserved. In your contribution, authentication is done at the time of registration. Why is this preferable to what is already in H.323 ?
3. What is the reason for the information flow from the HLF to the home gatekeeper, and from the home gatekeeperr to the HLF ? I don't think we can assume that there is only one home gatekeeper that the terminal may be using. In fact, the home gatekeeper may not have any information about the user.
Regards, vineet