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Called #, Calling #, Answer TIme, Disconnect Time, Date and time of Call, Orgination phone Number, Call Treatment, Orgination Trunk Group #, Termination Trunk Group #, Duration. This can also be customised based on business needs.

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Posted by willie_jameson

Call Detail Records (CDR) contain information about calls that have passed through
your Asterisk system.This is a popular use
of databases in Asterisk because CDR can be easier to manage if you store the records
in a database (for example, you could keep track of many Asterisk systems in a single
table).
CDRs consist of a unique identifier and several fields of information about the call
(including source and destination channel, length of call, last application executed and
so forth). In a clustered set of Asterisk boxes, it is theoretically possible to have dupli-
cation among unique identifiers since each Asterisk system considers only itself.

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Posted by sagitraz