In the real-world, the Voice Switching & Control System (VSCS) is a hardware and application interface that allows controllers to activate VHF/UHF transmitters for associated sector frequencies and also make audio input/output selections. The VSCS is part of the controller's workstation, but is not technically part of the ERAM computer human interface.
For the purposes of POSCON, however, we have combined the VSCS into the ERAM program and it can be accessed via the MASTER TOOLBAR > VIEWS menu.
The VSCS requires a controller to be Signed-In to a position in order for it to populate data from the server. Once populated, it should look something like this:
Each white box indicates a different air-to-ground frequency/transmitter combination. Within each white box, the top line indicates the VHF or UHF frequency while the bottom line indicates the transmitter name. The logic behind what is shown on this page is as follows:
The first button located in the top left is always going to show the frequency of the sector you signed into.
All other frequency/transmitter buttons are populated from the Facility + Area that you signed into.
The two white boxes shown with a red line over-top of them indicate emergency transmitters.
The three red PTT buttons located just below the emergency transmitters are push-to-talk buttons that activate the emergency transmitters. The logic for the emergency PTTs is as follows:
PTT UHF - Is currently not operational.
PTT BOTH - Will activate both the PTT UHF and PTT VHF when PTT UHF becomes operational.
PTT VHF - Simultaneously activates the VHF 121.5 MHz transmitter and any other selected transmitters set to transmit.
Here is how it would look if you push the PTT VHF button:
On the bottom of the VSCS panel, there are various control buttons. The only button that works in this row currently is the Air-to-Ground Alternate (A/G ALT) page button. This button shows a second page of frequency/transmitter buttons if needed for overflow.