* The companies will offer a solution for service providers to migrate traditional voice switching to VoIP
* Starwood Hotels will partner with Tata Communications; Marriot International will join with AT&T
* Buyer's guide helps navigate the variety of products available
* The advanced VoIP service will no longer be limited to legacy Grand Central customers
* The five-year deal targets UC, managed security and network management
* The SaaS provider also plans interoperability with Skype
* Enhancements include improved security, user controls, video sharing and support for Lotus Notes Domino
* The company also offers Web-based serviced aimed at SMBs
Predicts that global IP traffic will increase fivefold by 2013
