September 2007 Call Recording and PlaybackSystem Infrastructure Guide 43RecordingBefore a recording can begin, the capture engine of the Recorder verifiesthat a valid license exists, then detects voice cards. Once these prerequisitesare done, the Capture engine proceeds to capture and record voice data andmetadata from either a CTI source (the primary source) or from a voice card,while at the same time allowing for backup recording when the CTI sourceis unavailable. Finally, the capture engine persists and consolidates data tolocal archive devices, including data from another Recorder if one exists.These tasks are described in the following sections: Recording prerequisites Auto-detecting telephony cards Validating licensing Capturing and recording voice data Capturing and recording associated call data Capturing CTI-initiated contact Capturing voice card-initiated contact Control FallbackRecording prerequisitesRecording prerequisites include detecting telephony cards and validatinglicensing. After the Recorder has these prerequisites in place, capturing canbegin.Auto-detecting telephony cardsThe Recorder's capture component probes the system while initializing todetect the existence of any telephony interface cards. The Capturecomponent then compares the detected card(s) with those that already existin the configuration file config.xml. If any mismatch is reported, such asnew cards added or existing cards removed, moved, or replaced, a new file,
