Polycom VSX Series manual Settings Audio Settings screen

		Diagnostics and General Troubleshooting
Symptom	Problem	Corrective action
Audio is not in stereo.	Microphones at the sending	Be sure the microphones are set up as described in
	site are not placed	Connecting Microphones or a
	correctly.	SoundStation VTX 1000 on page 2-19. Microphones
		must be at least 3 ft. (0.9 m) apart and properly
		positioned.
		Move the microphones farther apart for clearer
		stereo imaging. Small changes in distance can have
		large effects on sound reproduction.
	Speakers at the receiving	Ensure the speakers are about 60° apart as seen
	site are not placed	from the middle of the seating area.
	correctly.
	Speakers at the receiving	Test both speakers using the test on Diagnostics >
	site are not connected	Audio > Speaker Test. If you do not hear the 400 Hz
	correctly.	tone from both speakers, check the speaker wires
		and other external audio connections.
	The receiving site is not set	Advise the people at the receiving site that the sound
	up for stereo sound.	will be in stereo only if the system is set up for stereo
		as described in Placing Speakers to Play Stereo from
		Far Sites on page 2-27and Configuring
		StereoSurround Settings on page 4-25.
		Check whether stereo is enabled on the Admin
		Settings > Audio Settings screen.
	Echo cancellation is	If you are not using the audio mixer, clear the Echo
	enabled on the balanced	Canceller selection on the second Admin Settings
	audio input.	> Audio Settings screen.
	This disables the stereo
	feature.
	The call speed is too low.	Try the call at a higher speed.
	The system only sends
	stereo audio in calls placed
	at 256 Kbps and higher.
	The system is configured	Stereo audio is disabled by default on all systems
	for single monitor VGA.	that support VGA as the main (or single) monitor.
	The system is in a	Stereo audio is disabled when the system is in a
	cascaded call.	cascaded call.
	Encryption is selected.	Stereo audio is disabled when encryption is selected.
	Dual monitor emulation is	Stereo audio is disabled when dual monitor
	selected.	emulation is selected.

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