If you capture the CDR data to a PC it is not at all difficult to read. You can use use any word type program to search for DN's that you are looking for, or search for the actual number called, however you want to look at it. THe only cost would be the PC that stores the data, but really any older PC that will run Procomm will work.
much lower cost than any 2nd party, unless you are actually wanting to send out billing to tenants.
JohnThePhoneGuy
"If I can't fix it, it's not broke!