Looks like Cisco finally acknowledged that BYOD is part of “Voice over Wireless” solution which they have to support. In the past Cisco TAC only support if customer is using Cisco wireless phone (7925/7921) in their Voice over wireless deployment & not any BYOD as wireless client.
With Jabber client release for any BYOD, almost all customers want to use that as wireless end device to deliver voice/video services over wireless. This WLAN Best Practice for Apple Devices document guide you how to configure your Cisco WLAN to support Apple Devices.
I found this from the below blog you may want to go for further related information.