BES for Exchange doesn't use the Offline Address Book (OAB) ... but I bet if you're a user in an Exchange shop you use it!

Give this a look see (Copied without permission from Rajith Jose Enchiparambil's Blog ... subscribe to posts): Get-ExchangeServer: How Offline Address Book Works In Exchange 2007…

A clear understanding of how the offline address book works in exchange helps an admin in troubleshooting the related issues. This article explains how oab works in the 2007...