The Comprehensive ATN Manual (CAMAL)  was developed by the ATNP with the objective of providing comprehensive guidance to users,  developers, and providers of ATN services.  If you download any of these documents, you should note these are editors' drafts and not the approved ICAO text. No warrantee is offered as to the correctness of these documents.  The versions available here in no way replace the official ICAO text. Please note that these documents are in Adobe Acrobat format.