1. When someone presses the doorbell button on your GDS3705.
  2. The extension/s that were set up to ring will begin ringing.
  3. Answer the call by lifting the handset or pressing the Answer (green phone) button.
  4. Press the Remote PIN given by Velox. Eg. 12345678
  5. Then press the OpenDoor Button. 
  6. After pressing the OpenDoor button, the GDS3705 will beep  indicating that the Door has been opened.