A gas-to-liquid process and system for converting a natural gas) into liquid hydrocarbons wherein the equipment subsystems from existing gas-to-methanol plants are re-utilized in the process. The wavelength division multiplexing device includes a first optical circulator and a Fiber Bragg Grating. One message type provides actual state andor location information about a metadata controller. First slide fences allocated to the lower positioning surface and second slide fences allocated to the upper positioning surface are slidably supported in a table surface direction relatively independent from each other. The audio driver adjusts the output volume of the speaker responsive to variations in ambient noise detected by the microphone so that the speaker produces a substantially consistent volume level in relation to the variations of ambient noise.