For example of Mitel standard output see forum post
MITEL 3300 Certified format
TNG does not have a feature to delete data or date ranges as data is then manipulated. The only option is to blank the TNG database and re-import the export files. You will however have to change the date in the export files to 2011 for the December calls in question.
To blank TNG database:
- Stop the TNG service.
- Navigate to 'C:\Program Files\datatex\tng\data'.
- Make a backup folder, for example todays date.
- Move the ?_data_?.dat files to the backup folder.
- Start the TNG service.
- Your TNG will have no call details.
- To import the Export files see forum post:
TNG Export format