Systems and methods for conferencing enterprise and non-enterprise callers

A method, comprising:

• establishing a tributary conference on an enterprise media server, the tributary conference in data communication with an enterprise caller at an enterprise in response to a first call from the enterprise caller;
• sending joinder instructions to join the tributary conference, from an application server in a data center to the enterprise caller;
• receiving a second call initiated by a non-enterprise caller at a gateway of the data center;
• converting the second call into an internet protocol call at the data centre;
• interfacing the non-enterprise caller with a data center media server of the data center;
• creating a home conference on the data center media server;
• joining the second call to the home conference on the data center media server;
• and
• wherein interfacing the non-enterprise caller with the data center media server comprises:
• routing the second call from the gateway to the application server of the data center;
• routing the second call from the application server to the data center media server;
• and
• establishing data communication between the gateway and the data center media server.

A conferencing system comprising:

• an enterprise sub-system comprising:
• an enterprise media server to host a tributary conference in data communication with a first communication device;
• and
• a data center sub-system at a separate location from the enterprise sub-system, the data center sub-system comprising:
• a gateway to receive a second call initiated by a non-enterprise caller via a public switched telephone network, the non-enterprise caller using a second communication device to initiate the second call, the gateway to convert the second call into an internet protocol call;
• a data center media server to host a home conference in data communication with the second communication device;
• and
• an application server to interface the home conference on the data center media server with the tributary conference on the enterprise media server by routing the second call initially from the gateway to the application server and later from the application server to the data center media server and establishing data communication between the gateway and the data center media server.