The document discusses a two-phase rollout approach for migrating mobile phone services from the current provider to Optus. Phase one will involve piloting the transition with a small group of users and centrally-managed accounts. Phase two will transition the remaining faculties and professional departments on a rolling basis. The rollout will utilize information sessions, newsletters, and deployment staff to communicate the changes and transition users to the new Optus services in a coordinated manner while refining processes based on feedback.