[Asterisk-Users] billing???

[Altus Syman]

Good day all
This is most likely a new topic but I'm searching for some billing 
software for asterisk ,free, if can
I looked at http://www.voip-info.org/wiki-Asterisk+billing and the whole 
of the cdr thing in my /var/log/asterisk
Its all all comma separated and I'm sure It cant be that hard to write 
your own billing software? I dont have the time or the skill for this
Thanks
Altus