Which platform is Cisco Webex calling based upon?

Cisco Webex Calling is based on Cisco's cloud infrastructure. It leverages Cisco's collaboration technologies to provide a cloud-based business phone system. The platform is part of the broader Webex portfolio, which includes various collaboration and communication tools and services offered by Cisco. Webex Calling is designed to integrate with other Webex collaboration solutions, providing a comprehensive communication and collaboration platform for businesses.

The text appears to be a reference to a product or technology, specifically "Cisco Unified Communication Manager," which is a system used for managing voice, video, messaging, and mobility services. It is not a sentence in an unknown language, but rather a proper noun referring to a specific software solution by Cisco.