WebinarRTC.prototype.joinRoom = function () {
  var self = this;
  self.connection
    .join({name: self.roomName})
    .on(self.ROOM_EVENT.STATE, function (room) {
      self.room = room;
      var participants = room.getParticipants();
      if (participants.length > 0) {
        for (var i = 0; i < participants.length; i++) {
          console.log('Участник ' + participants[i].name());
          participants[i].getStreams().forEach(function (val) {
            var streamName = val.streamName();
            console.log(participants[i].name(), streamName);
          });
        }
      }
    });
};