For the T'rang, find their main teleporter in Lower Marten's Bluff. Put the red&yellow wires in to stop the randomizing of the teleporter. Next, select destination. The one that shows arnika teleports you to the house south of Arnika, and you can open up that door. There is a teleporter in that house leading you back to martens bluff.
For the Umpani, you need a decent IUF security pass (2 or 3 I think) to enter mount gigas. Then you'll have to head upstairs and find the Humpawhammer. It leads to the stray house by the monastery, and its another 2 way leading back and forth. Stick with the t'rang teleporter, its better.
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