Ok I have read and reviewed the tutorial and example map.
But in my map I chose not to use a triger button for the teleport back.
So I created 2 trigger_teleports:
Brush 1
Name: tele_trig1
Target: tele_dest2
Brush 2
Name: tele_trig2
Target: tele_dest1
Then set info_telelport_destionation in front of the each trigger. In theroy this should allow you to teleport back and forth between rooms right or did I miss something?