Which event triggers the activation of Avaya Aura® Communication Manager (CM) Survivable Server so it can accept H.323 registrations and/or make IP trunks active?
A . a broadcast message from the Main CM Server right before it goes in failure
B . the first
C . 323 Registration Request the CM Survivable Server receives from any
D . 323 Endpoint, after the Endpoint loses contract with the Main CM Server
E . the interruption in the RAS keep alive link between CM Main and CM Survivable Servers
F . the availability of DSP Resources in the CM Survivable Server, the registration of either a Media Gateway or an Avaya Aura® Media Server with that CM Survivable Server.
Answer: D