The TLG3 GUI Codec Controller can be used to control the functions of 1RU rack mount codecs and comes completely Free with all Commander G3 Rack unit's sold.
This new software also provides control of the TLR300B rack unit codec.
Once the Codec Controller is installed on a PC and it is connected to your codec, it can control all the normal codec functions such as dialing, menu navigation and monitoring and controlling levels. Basically the functions of the Codec Controller and the menus replicate those on a physical codec front panel.
Please refer to your Commander G3 rack unit user manual for more information on the TLG3 GUI Codec Controller.