Polycom Vortex EF2210 Reference Manual

TROUBLESHOOTING
© Polycom, Inc. 37 VORTEX EF2211/EF2210 Reference Manual
T ROUBLESHOOTING
A UTOMATIC M ICROPHONE M IXER
The microphone
is not gating
• Check if the microphone is assigned to an automixer.
• Check if the microphone is muted.
• Check microphone level. Is the microphone set to the appropriate mic or line
level? Is phantom power on where needed?
• The Hold Time may be too low. Microphone channel gating On and Off too fre-
quently during short pauses in speech might be the result of setting the Hold
Time too low.
• Check Gating settings. Is the microphone Forced Off?
• Check Gating Priority. If your input has a Gating Priority of 4, the microphone
may not gate as frequently.
• Adjust the Adaptive Threshold if the Gate Threshold is set to Adaptive or adjust
the Manual Threshold if the Gate Threshold is set to Manual. For Adaptive Gate
Threshold, set the Adaptive Threshold lower so that the microphone will gate On
when lower level signals are present at the microphone. For Manual Gate
Threshold, set the Manual Threshold to a lower absolute threshold.
M ATRIX M IXER
Don’t hear output • Make sure the output is not muted.
• Check that the input you’re expecting to hear is included in the output that you’re
listening to.
E CHO C ANCELLER R EFERENCE
Room Audio
Sounds Choppy
If you hear the local room’s audio from the loudspeakers and it sounds choppy, you
may have included the room’s microphones in the echo canceller reference. The echo
canceller reference should NOT include the local room’s microphones -- it should
only contain the remote end’s audio and program audio. You can still add the local
room’s microphones to the local output with the matrix, but do not add them to the
echo canceller reference. For more specific guidelines on what to include in your
echo canceller reference, see “Build Your Echo Canceller Reference” on page 16.
R ESIDUAL E CHO
You may hear residual echo if system levels are not set properly. Improper level set-
tings anywhere in the audio path can introduce nonlinearities that hamper the opera-

Polycom Vortex EF2210 Specifications

General

Brand	Polycom
Model	Vortex EF2210
Category	Telephone Accessories
Language	English