[Freeswitch-users] xml_cdr and contact header question

[Yuriy Ivzhenko]

Hello.
I develop report system on database from mod_xml_cdr

I wish to select all calls to the user XX 

For this purpose I do select on 
callflow -> profile_index = "1"
caller_profile -> destination_number = XX
(exact select: http://pastebin.freeswitch.org/13519 )

And all is good but FS get destination_number from a field <contact> which the 
user defines at registration. So there is no useful.

Questions. 
1. As it is possible to forbid registration of the user with number in the 
field <contact> distinct from username?
2. Whether there are other variants to select all calls to the user XX?