The document discusses enterprise voice and collaboration services provided by Tata Communications. It addresses problems with traditional voice services such as expensive long distance calls and uneven customer support. Tata Communications offers SIP trunking which provides fully managed global voice service with high quality of service and support for multiple PBX systems. The company also offers audio conferencing and collaboration services that allow geographically dispersed teams to communicate at a low cost. Finally, the services enhance customer experience through toll-free numbers that can be accessed across many countries and call routing to global call centers.