Mobile subscribers are demanding the same type of services that are provided over the Internet on their mobile phones, including messaging, social networking, and video sharing. Mobile operators realize the importance of retaining their existing voice-service customers in the emerging all-IP world.
http://www.cisco.com/c/en/us/products/collateral/wireless/converged-services-platform/data_sheet_c78-607158.pdf
http://www.cisco.com/c/en/us/products/collateral/wireless/converged-services-platform/data_sheet_c78-607158.html