The control unit is able to send SMDR (Station Message Detail Reporting) records to a specified IP address and port. Various third-party call billing applications are able to process those records to produce call reports.

• An SMDR record is output for each call between two parties.

• The SMDR record is output when the call between the parties ends.

• In some scenarios, for example transferred calls, multiple SMDR records are output for each part of the call. That is, each part of the call where one of the parties involved changes. The different parts of the call are referred to as ‘call legs’ or ‘call segments’.

• Each SMDR call record is output in a CSV format with a comma between each field.