On Mon, Jan 31, 2011 at 7:06 AM, Steven Ayre <steveayre@gmail.com> wrote:

http://wiki.freeswitch.org/wiki/Channel_Variables
XML CDR also contains extra information such as callflow.

Can't really give you an answer on the quality information...

-Steve

http://wiki.freeswitch.org/wiki/Mod_xml_cdr#Channel_Variables

There is a brief description of each piece of data.