Which three statements are true when migrating from an existing Cisco Unified Communications platform to Cisco Business Edition 6000? (Choose three.)
A
License migration from older standalone Cisco Unified Communications Manager releases is not possible
B
License migration is also supported from Cisco Business Edition 3000 and 5000
C
Configuration and user data does not have to be reprovisioned
D
License migration is supported using the Cisco 9 and 3 upgrade offer
E
Only some types of existing Cisco IP phones can be reused
F
When migrating, any service and software subscriptions must first be terminated and credit requested for the remaining period of the contract
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