Call records, read the way an analyst reads them CDR
A contact whose last call is three weeks before the record ends has stopped. That is a fact with a date on it, and it is invisible in a sorted column.
The records
Who to look at
Pattern of life
The whole set by day of the week against hour of the day. A working pattern, a night pattern or a change of pattern is visible here and is not visible in a column of times, which is why this is the output analysts reach for first.
Contacts
In common
The working
This reads records you already hold. It does not fetch anything, look a number up, or resolve one to a person.
How it works
Phone call records show more when laid out in time than when sorted in a column. CDR reads a call detail record and shows a pattern-of-life grid by day and hour, the silences, the contacts that stopped and on what date, and the numbers two records have in common. It is built for investigators, lawyers and journalists working with records they already hold. Nothing leaves your device.
Doing this often? OBSCURA Case reviews communications in bulk, with a who-wrote-to-whom view, and builds the chronology. On its own, US$4 a month; with everything else, US$9 a month or US$79 a year. 7 days free.