How to use :

Bell XSDs must be used with ARCHIVED_NENA_XML_Schemas_4.2 files. 
http://www.nena.org/resource/collection/70D484FB-7D61-4C5B-ADD8-FA189BE804BD/ARCHIVED_NENA_XML_Schemas_4.2.zip

The following NENA AQS files are necessary :

ali/ali/ALI.xsd
ali/ali/ALITypeLib.xsd

aqs/aliqs/AQS.TCP.xsd
aqs/aliqs/AQS.xsd

The following Bell XSDs files contain extensions that can be used with NENA AQS files :

ali/ali/BellALITypeLib.xsd			(Bell Types)
ali/ali/BellALIBodyExt.xsd			(Extension that is added into the extension block of an ALIBody)

aqs/aliqs/BellAQSExt.xsd			(Extension to be able to put a timestamp and inResponseTo into an Ok message)
aqs/aliqs/BellQueryPropertiesExt.xsd		(Extension that is added into the extension block of a QueryProperties)
aqs/aliqs/BellAdvisoryDetailedExt.xsd		(Extension that is added into the detailed block of an Advisory)


To combine Bell files with NENA files, you must create a parent XSD similar to this XSD :

aqs/aliqs/AQS.TCP.Bell.xsd			(This file is only an example)
