A data stream from an internal endpoint of a video conference participant is received at an enterprise media processing node. The internal endpoint is accessible to the enterprise media processing node behind a firewall on an enterprise network. The received data stream is translated and transcoded into a predefined common communication protocol. A data stream in the common communication protocol is received at an external media processing node using a firewall friendly protocol to traverse the firewall from an external endpoint. The external endpoint communicates with the external media processing node outside the enterprise network. A composite data stream of the received data streams from endpoints within the enterprise network and outside the enterprise network is selectively generated, and sent to the internal endpoint.