We are changing our dial plan from 4 digits to 10 digits due to overlaping DNs in multiple sites.
Question that I have is that "Is their a better way to do this other than BAT export and then Import"
Concerns I have that I would have to remove all the phones and users from CCM and then re-import them through BAT and I would loose all my customization (speed dial, Address Book, fast dials) for all the users.
I have well over 2500 users.
Your assistance will be greatly appreciated.