I have a G430 Gateway with a S8300D server running CM 6.1x. I am about to migrate over to a MES and trying to understand something about LSP mode. When I migrate over to MES, my plans were to have all of my extensions SIP and talk SIP to my voice mail (Exchange 2010 UM). If for whatever reason, my MES server goes down, would the S8300D server go into LSP mode? If so, how would it in turn talk to the phones if the phones are talking SIP and the only thing the S8300D can do under CM6 is talk H.323 or am I missing something?