Depend on sdp-interop@0.1.2, sdp-transform@1.4.0

modules/xmpp/TraceablePeerConnection.js

     this.trace('setLocalDescription::preTransform (Plan B)', dumpSDP(description));
     // if we're running on FF, transform to Plan A first.
     if (navigator.mozGetUserMedia) {
-        description = this.interop.toPlanA(description);
+        description = this.interop.toUnifiedPlan(description);
     } else {
         description = APP.simulcast.transformLocalDescription(description);
     }
     this.trace('setRemoteDescription::preTransform (Plan B)', dumpSDP(description));
     // if we're running on FF, transform to Plan A first.
     if (navigator.mozGetUserMedia) {
-        description = this.interop.toPlanA(description);
+        description = this.interop.toUnifiedPlan(description);
     }
     else {
         description = APP.simulcast.transformRemoteDescription(description);

package.json

       "events": "*",
       "pako": "*",
       "i18next-client": "1.7.7",
-      "sdp-interop": "jitsi/sdp-interop#f65fedfe57a",
-      "sdp-transform": "1.3.0",
+      "sdp-interop": "0.1.2",
+      "sdp-transform": "1.4.0",
       "async": "0.9.0",
       "retry": "0.6.1"
   },