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How do I enable measurement mode on a COMfortel M-5X0 and which measurement values are displayed?

  1. Press the Off key for a long time to switch off the handset.
  2. Press and hold down keys 1, 4, 7 and the On key at the same time to switch it on.
  3. The handset starts operating, and displays its Service menu. You can then enter the key combination 76200.
  4. Select the Metering Mode menu option and press OK to confirm, then select "Back".
  5. The handset switches itself off.
  6. Switch on the handset again. You now see the measurement values at the top of the display.
     
After using measurement mode, follow the steps above to deactivate it again.