Mitel 3100 call accounting
Follow the steps below to configure your Mitel 3100 to output SMDR data via a serial connection:

1-Using an RS-232 cable, connect the PC running PBXDom collector to the serial port of the Mitel 3100.
2-Launch the Mitel System Tool.
3-Choose Voice from the selection menu.
4-Click on the Management tab, select Call Logging.
5-Click Change to set the following parameters:

6-Click Save and commit the changes.