asterisk users - Jan 2016 - PJSIP - Realtime - Transports module?

Does anyone know which module the type=transport loads under.
 I am trying to set up transports to load from a realtime table. I added 
the following under [res_pjsip] and it does not poll the associated 
database.
  
 [res_pjsip]
transport=realtime,vap002_ps_transports
  
 We also set the associated values in extconfig.conf as well. My best guess 
is that transports are loaded under a different module's context. Anyone 
have an idea?
  
 Thanks

Bryant

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