For KO'd characters, use smelling salts. The only way to the T'Rang transporter from the outside of Marten's Bluff is through the trap door. However, You can only open it from the inside.
Did you find the T'Rang transporter? Where T'Rang Youngers are being beamed from their Mother Ship? The room directly across from the T'Rang Portal room. You need to repair with the wires you find near the dead T'Rang, along with a T'Rang arm and a note with a single combo digit.
The trap door is found on the other side of this area. Go past these rooms and up the other flight of stairs.
It's a very small area with just a ladder and a lever that opens the trap door. Leave the trap door open and you now have a back entrance to the T'Rang Portal room.
Spence