For connecting a Customer Site to the PSTN (Public Switched Telephone Network) in the context of Webex Calling, a Webex Calling Partner can utilize the following two methods:

Using a Local Gateway connected to the PSTN:This method involves deploying a local gateway at the customer’s premises that interfaces with the existing PSTN. This gateway acts as a bridge between the customer’s on-premises telephony infrastructure and the Webex Calling service, enabling seamless integration and connectivity to the PSTN.

Using a Cloud-Connected PSTN provider:This method involves connecting the customer site directly to a PSTN provider that is cloud-connected. This eliminates the need for on-premises equipment and simplifies the deployment by using a service provider that is integrated with Webex Calling, offering PSTN services directly from the cloud.

These methods ensure flexibility and scalability in how customers connect to the PSTN, based on their specific infrastructure and operational needs.