Secondly, are there different modes of connection on H.323? Is it true there is one called Fast Start with H.245 tunneling? And slow start with tunneling?
What is the difference? What is the impact for call setup and connection stability?
H.245 is the control mechanism for H.323. In H.245, the logical channel 0 is open and allows calls to be managed through this logical channel. In multimedia transmissions, such as H.323, various means can be used to move the calls and to manage the sessions while the calls are open. Depending on how your routers are configured and what your software capabilities are, this may provide a small boost in performance.
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