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A call detail record (CDR) is a data record produced by a telephone exchange or other telecommunications equipment that documents the details of a telephone call or other telecommunications transactions (e.g., text message) that passes through that facility or device. The record contains various attributes of the call, such as time, duration ...
Call tracking software records information about incoming telephone calls and, in some regions, records the calls themselves.Call tracking is a technology which can enable the pay per call, pay per minute or pay per lead business model, allowing the tracking of phone calls to be associated with performance-based advertising such as Google AdWords, SEO Services, Display and Electronic Direct ...
According to an anonymous source, the database is "the largest database ever assembled in the world," [1] and contains call-detail records (CDRs) for all phone calls, domestic and international. A call-detail record consists of the phone numbers of the callers and recipients along with time, position and duration of the call.
Telephone call metadata: MAINWAY: National Security Agency: Military national defense: 1.9 trillion call-detail records (estimated) Assessed internally as "51% confidence" of being foreign: Consumer transactions [6] [7] Consumer Financial Protection Bureau: at least 10 million consumers: data at least partially anonymized: Usual residency ...
Telephone call data, such as originating station, destination, start and ending times, and transmission characteristics, is collected from a telecommunications system or private branch exchange (PBX) in form of call detail records (CDRs). The equipment typically presents this data on older PBXs via a serial communications port, or more recently ...
Automatic message accounting (AMA) provides detailed accounting for telephone calls. When direct distance dialing (DDD) was introduced in the US, message registers no longer sufficed for dialed telephone calls. The need to record the time and phone number of each long-distance call was met by electromechanical data processing equipment.