asterisk users - Apr 2005 - Cost field in Call Detail Records (cdr)

Hi there

I don't know if this utility is available anywhere at the moment but I
thought id ask you guys if you know of one


What I would like is a way of adding a field to my cdr records (either the
Master.csv or a destination mysql table) for cost !  based on some sort of
config file (or table) which has a listing of all the tariffs for particular
prefixes, ie in the UK, the 0870 prefix is national rate at ?0.04p per
minute (don't know if that is exact btw !) so I would like a way of adding a
field that determines , for example that extension 7201 made a 4 minute call
to an 0870 number and therefore that call has cost ?0.16p.  

I can then get my reporting software to pull this additional field into the
report

Is there anything around that does this sort of thing, open source or
otherwise ??

Any help would be greatly appreciated

Gary