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Cisco Video Surveillance IP PTZ Dome Camera User Guide, Cisco 2900 Series IP Dome
OL-24281-01
Appendix A Troubleshooting
The audio signal is weak. You are not using the correct
type of transformer.
Make sure you are using a
600-ohm impedance matching
transformer.
The wiring distance connecting
the audio equipment may be too
long.
Test the equipment using a
shorter wiring distance.
The gain is not properly
adjusted.
If you are using an external
amplifier and it has an adjustable
gain, increase the gain until the
signal is acceptable.
There is an echo when audio is
received.
The speaker volume is too high. Lower the speaker volume
he microphone and the speaker
are too close together.
If your call station does not have
built-in echo cancellation, move
the microphone and speaker
farther apart
Your call station does not have
built-in echo cancellation.
Use a call station with built-in
echo cancellation.
Table A-1 Troubleshooting the Cisco 2900 IP Dome (continued)
Issue Possible Cause Suggested Resolution