Using iPhone as Pager for Business

I'm looking for solutions people are using to allow their iphone to be used as pagers. We currently are sending text messages as pages to the iphone. it works great, but you can't customize the alert to continue reminding you if you miss it, etc. the current solution to this problem is an app out there but it only works for jailbroken phones: MyProfiles by intelliborn (2nd one down on this page) http://www.intelliborn.com/products.html

has anyone found another solution to assist in the alert component of sending pages to business members using text?

thanks!