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Polycom Vortex EF2211 User Manual

Polycom Vortex EF2211
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S01MUTEO*?
Query mute status of all outputs.
S01MUTEO*abcd , where each of the letters
(a, b, etc.) is either 0 or 1 depending of the
current status of the mute on the
corresponding output. If this command was
sent after the example above, then the status
message would be S01MUTEO*0110
8.109. NC -- Enable Noise Cancellation
This command sets or queries the status of the Noise Cancellation (NC) algorithm on input channels 1
and T .
When the wildcard character, '*', is used to specify the channel in this command, it only affects input
channel 1. To set or query the telephone input channel, T, you must specify it explicitly (e.g., '' ''
'S01NCT1', '' '' 'S01NCT?').
This command is a channel boolean command. See
Section 6.3 and Section 6.1 for more information
on this type of command.
This command is saved to non-volatile memory only as part of a preset. The state of this command
will be restored after power-up only if a preset is saved and that preset is set to be the power-on
preset.
Example Description Status Message
S01NC11
Enable NC on input channel 1 .
S01NC11
S01NCT0
Disable NC on input channel T.
S01NCT0
S01NC12
Toggle NC state on input channel 1 .
S01NC1x , where x is 0 or 1 depending on
the current state of NC on input channel 1 .
S01NC1?
Query NC state on input channel 1 .
S01NC1x , where x is 0 or 1 depending on
the current state of NC on the input channel.
S01NC*1
Enable NC on input channels 1 and T .
S01NC*1
S01NC*0
Disable NC on all microphone input
channels (only input 1 on EF2211) .
S01NC*0
S01NC*2
Toggle NC state on all microphone input
channels (only input 1 on EF2211) .
S01NC*x , where x is 0 or 1 depending on
the current state of NC for each of the
corresponding input.
S01NC*?
Query NC state on all microphone input
channels (only input 1 on EF2211) .
S01NC*x , where x is 0 or 1 depending on
the current state of NC for each of the
corresponding input.
8.110. NCL -- Set Noise Cancellation Attenuation
This command sets or queries the attenuation level of the Noise Cancellation algorithm on input
channels 1 and T . For example, if NCL is set to 10, then the Noise Cancellation for that channel will

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Polycom Vortex EF2211 Specifications

Power IconPower
input voltage110-240 VAC
frequency47-63 Hz
power consumption25 W
phantom power24 V
Connectors IconConnectors
RS-232DB9F
EF Bus In/OutRJ45
Telephone Line/SetRJ11
Control/StatusDB25F
Audio3.5mm quick connect terminal blocks
Audio Specifications IconAudio Specifications
microphone input-30 dBu to +0 dBu
line inputs-20 dBu to +0 dBu
line outputs-20 dBu to +0 dBu
loudspeaker output10 W, 4-16 Ohms
input impedance10 k Ohms
output impedance50 Ohms
headroom20 dB
signal to noise ratio85 dB
frequency response20 Hz - 22 kHz
Echo and Noise Cancellation IconEcho and Noise Cancellation
total cancellation65 dB
convergence rate40 dB/second
noise cancellation0-15 dB
echo cancellation40 dB, total >65 dB
convergence30 dB/second
cancellation span32 ms
acoustic echo cancellation span270 ms
Operating Environment IconOperating Environment
operating temperature0 °C - 40 °C
status outputs5 V, 20 mA each
Weight and Dimensions IconWeight and Dimensions
width483 mm
length244 mm
height45 mm
weight1.8 kg
shipping weight2.5 kg

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