The usage reporting feature provides for the generation of CDRs (Call Details Records) for all calls, distinguishing between completed and non-completed calls (ring no answer, busy status).
The CDRs include, for example:
Date and time
Carrier ID code
Originating account number
Destination telephone number
Duration of call in tenths of seconds
Calling party number (if available)
For the United States, the reference time clock is the United States Department of Commerce's atomic clock timeserver in Boulder, Colorado. Other local, national or international time servers may be used for international markets.
Parent topic: Call Detail Record (CDR)