Which app are you using for that? We're implementing iPads for corporate email using the MobileIron Enterprise solution to encrypt and secure the email on the iPads and I'd love to be able to add the functionality you're describing above for our Sr. Exec's. We're in the process of implementing Cisco's VOIP solution and campus wi-fi, so that'd be a very cool function to be able to have on the iPads!
Trust me on this, we're Cisco partners. I'm willing to bet that you spent at least 30% more than you should have. And the licensing for that feature on the Cisco platform is going to be ugly to say the least.
On Planet Cisco you're going to need a SIP license for every user. Prepare to bend over for that. Plus Cisco will nail you for the SmartNet on each and every user and as an added bonus all the licenses will expire after 3 years.
Then you get to buy them all again.
You should have looked at Mitel or even Avaya. At least they'd let you keep what you bought for as long as you owned the system.
And the folks at Cisco Tech Support will repeat endlessly that this application isn't officially supported. Sorry...does it seem like I hate Cisco? That comes from working with them for the last 3 years or so....
Anyway, look at the Bria app from Counterpath. Then call your Cisco rep in. Then open your wallet. I'm sure they'll get it to work just about the time you're completely out of money.
LOL