Polycom EF2201 Brochure & Specs page 21

2. Down Button. Scrolls backward through menu items at a particular level or decreases the value of a parameter.
3. Up Button. Scrolls forward through menu items at a particular level or increases the value of a parameter.
4. Enter. Enters the menu and allows you to select and change parameter values.
5. Esc. Returns to the next highest level of menus.
6. Home. Returns to the top of the menu structure.
7. Level Indicator. Indicates the level of the selected channel or parameter.
8. Channel Activity LED's. Indicates gating activity of the 8 mic/line channel inputs.
9. Input Logic Port. Parallel logic input.
10. Output Logic Port. Parallel logic output.
11. EF Bus In. Connects to EF Bus Out of another Vortex.
12. EF Bus Out. Connects to the EF Bus In of another Vortex.
13. RS-232 Serial Port. Connect this to an optional RS-232 remote control device, such as a touch panel or personal
computer COM port.
14. Power Supply Input. Connects to the external power supply provided with the Vortex.
15. Line Outputs. Outputs 1 – 8 and A - D at line level.
16. Mic/Line Inputs. Connects to microphone at either mic or line level, with or without phantom power..
17. Line Outputs. Outputs 1-8 at line level.
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