Troubleshooting the Audio Module

44 The AXIS 2191 Audio ModuleAXIS 2420 User’s Manual

	Symptoms		Possible causes	Remedial actions

	No audio controls below		The AXIS 2191 is not selected	In the camera’s administration tools, click on External Devices and
	camera image.		as the external device.	select the AXIS 2191 Audio Module.
			Wrong camera firmware.	Check the firmware in the camera by checking if External Devices
				appears in the camera’s Administration Tools. If not, the camera does
				not have the correct firmware and it must be upgraded.
	No sound from the AXIS		Incorrect settings or faulty	Check that:
	2191 or from a PC trying to		connections.	• soundcard, speakers and microphone are connected
	access a web page			• the Mute button is not pressed
	containing audio content.			• the Mute button is not pressed
	containing audio content.			• the Int/Ext switch for the input is in the correct position

				• the input and output levels are correct
				• all cabling is connected and all power switches are ON
	No audio signal from PC to		The Post Content Length set	Set the value of the Post Content Length in your proxy server to 1MB
	the AXIS 2191 when passing		in the proxy server is too low.	or more. You may need to contact your system administrator to do
	a proxy server.			this.

	No full-duplex function.		Incorrect configuration.	Check the setting in the camera’s administration tools.
			Sound card does not support	For information on how to check if your sound card supports
			full-duplex.	full-duplex, please visit www.axis.com and see the support section for
				Axis camera products.
	Poor performance.		Too many users/clients	Try limiting the number of clients allowed to connect.
			connected.

			Low bandwidth.	Reduce the available bandwidth by changing to a lower setting in the
				Available Bandwidth selector. Setting a lower bandwidth will reduce
				any break-up in the sound, but will also increase the transmission
				delay.
				If running in Full-Duplex mode, try switching to Half-Duplex mode.
	Whining or screeching sound		Poor positioning of speakers	Relocate the speakers or microphone so that they do not point
	from speakers (feedback).		and/or microphone.	towards each other, and/or lower the volume.
	Poor sound on headphones.		Incorrect connection.	Headphones can only be used by connecting them to Speaker-Out on
				the terminal connector.

	The Power indicator LED is		Faulty power supply.	Verify that you are using an AXIS PS-D power supply.
	not constantly lit.
	The AXIS 2191 works locally,		Firewall protection.	Check the Internet firewall with your system administrator.
	but not externally.		Default routers required.	Check if you need to configure the default router settings.
Note:		If you still have a problem after reading this information, please contact your reseller, or

visit www.axis.com and check the support section for Axis camera products.

Troubleshooting the Audio Module

Possible causes

Remedial actions

delay.