Your company has two offices. The offices are located in New York and Tokyo.
You have an Exchange Server 2013 organization.
You have the following Unified Messaging (UM) dial plans:
Tokyo Dial Plan
New York Dial Plan
A user named User 1 has a mailbox that is associated with the New York Dial Plan. User 1 frequently works from both the New York and the Tokyo offices.
You need to add an extension from the Tokyo office to the account of User1.
Which cmdlet should you run?
A. Set-Mailbox
B. Set-UMMailbox
C. Set-UMMailboxPolicy
D. Set-UMDialPlan
