[Ecrit] Regulatory Requirments for Callback

["Hannes Tschofenig" <Hannes.Tschofenig at gmx.net>]

Hi all, 

I am looking for some references to regulatory requirements for PSAP
callbacks. I would like to see what is required from a regulatory point of
view as input for the PSAP callback document. 

So, if someone has some documents please let me know. 

Ciao
Hannes