Continue working on preparing the subscriber community to migrate to Cisco Unity voicemail.
Determine what data needs to be pulled from the existing legacy voicemail system and who is going to get it.
Document the existing voicemail system configuration. Start thinking about how you are going to record all of the special prompts and menus that currently exist. Identify any special configurations.
When will Cisco Unity be available for subscribers? How long with the old voicemail system be kept active?
Begin to finalize your Day 1 support strategy.
Continue working on subscriber communication and training.