Why do I lose audio when I shut off my screen on my Nexus One™?

The Nexus One™ has a battery saving feature which shuts off the Wi-Fi connection when the screen is turned off. Vonage Mobile will keep your screen on as long as you are on a call, however if you manually turn off your screen you may experience one way audio issues. To avoid this do not manually put your screen into sleep mode while on a call.