What are the PSTN options available for Webex Calling?

The available PSTN options for Webex Calling include Service Provider, Premise-based PSTN, and Cloud PSTN Provider, which are encompassed in the correct choice.

Service Provider PSTN refers to traditional phone services provided by telecommunications companies, enabling reliable and high-quality voice calling. Premise-based PSTN indicates that the organization manages its own premises to connect to telephone networks while utilizing their equipment. Finally, Cloud PSTN Provider simplifies this further by eliminating the need for on-premises hardware, allowing organizations to leverage cloud-based solutions for their calling needs. This combination allows for flexible deployment models based on the specific requirements of the business, ensuring efficient communication.

Other options may suggest varying types of PSTN connections but do not accurately capture the comprehensive range of services associated with Webex Calling or may include configurations that are not standard or applicable.