I am not sure if it is possible because I have not done it (I went to lvl 90) but I asked several people and they inform me that yes. It remains only to prove if it is true.
16:08 Jin Toujo : glr tem como usar summons na missao mortal combat em new frontier quest?
16:08 Lord Gurion : tem
16:23 Merlin Maverick : da pra sumonar la dentro sim