Cisco Systems OL-24281-01, 2900 manual

Appendix A Troubleshooting

Table A-1	Troubleshooting the Cisco 2900 IP Dome (continued)
Issue		Possible Cause	Suggested Resolution
The audio signal is weak.		You are not using the correct	Make sure you are using a
		type of transformer.	600-ohm impedance matching
			transformer.
		The wiring distance connecting	Test the equipment using a
		the audio equipment may be too	shorter wiring distance.
		long.
		The gain is not properly	If you are using an external
		adjusted.	amplifier and it has an adjustable
			gain, increase the gain until the
			signal is acceptable.
There is an echo when audio is		The speaker volume is too high.	Lower the speaker volume
received.
		he microphone and the speaker	If your call station does not have
		are too close together.	built-in echo cancellation, move
			the microphone and speaker
			farther apart
		Your call station does not have	Use a call station with built-in
		built-in echo cancellation.	echo cancellation.

Cisco Video Surveillance IP PTZ Dome Camera User Guide, Cisco 2900 Series IP Dome

A-2 OL-24281-01