Enables rtcp-mux and bundle by default.

Allows TCP to be used if the bridge supports it.

config.js

     enableRtpStats: true, // Enables RTP stats processing
     openSctp: true, // Toggle to enable/disable SCTP channels
     channelLastN: -1, // The default value of the channel attribute last-n.
-//    useRtcpMux: true,
-//    useBundle: true,
+    useRtcpMux: true,
+    useBundle: true,
     enableRecording: false,
     enableWelcomePage: false,
     isBrand: false