Polycom Vortex EF2211 User Manual

Example Description Status Message
S01PRESETX18
Execute preset number 18.
Status messages for all the commands in the preset will
be generated first, followed by the message:
S01PRESETX18
8.137. REDIAL -- Redial the Last Dialed Phone Number
Executing this command causes the Vortex to redial the last number. The last number is defined as all
the digits that were dialed since the phone was last taken off-hook. Like the
DIAL command, if the
phone is not already off-hook, this command will take it off-hook automatically.
Example Description Status Message
S01REDIAL
Redial the last dialed phone number.
S01REDIAL
8.138. REFASGN -- Assign AEC Reference to Input Channel
This command assigns an AEC reference signal (R1 or EF Bus) to an input channel. Only input 1 has
echo cancellation, so the command is only valid for that channel. Assigning 1 to the input channel
selects AEC Reference 1 (R1). Assigning 3 to an input channel selects the EF Bus Reference. The EF
Bus reference is an AEC reference that is placed on the EF Bus by one (and only one) of the linked
Vortexes. See the
BUSREF command for more information about the EF Bus reference. Assigning
REFASGN a value of 2 is not supported on this device. The value of 2 is only supported on devices
that can build a second AEC reference (i.e., the EF2280, EF2241).
Although this command is a channel integer command, the increment and decrement operators (>
and <) are not supported for this particular command.
This command is a channel integer command. See
Section 6.3 and Section 6.2 for more information
on this type of command. The minimum and maximum values for this command are 1 and 3,
respectively.
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
S01REFASGN11
Configure the AEC on input channel
1 to use AEC Reference 1 (R1).
S01REFASGN11
S01REFASGN1?
Query which AEC reference is
currently being used for the AEC on
input channel 1.
S01REFASGN1x , where x is either 1, or 3
depending on which AEC reference is
currently being used.
8.139. REFGAIN -- Set Reference Output Gain

Polycom Vortex EF2211 Specifications

Power

input voltage	110-240 VAC
frequency	47-63 Hz
power consumption	25 W
phantom power	24 V

Connectors

RS-232	DB9F
EF Bus In/Out	RJ45
Telephone Line/Set	RJ11
Control/Status	DB25F
Audio	3.5mm quick connect terminal blocks

Audio Specifications

microphone input	-30 dBu to +0 dBu
line inputs	-20 dBu to +0 dBu
line outputs	-20 dBu to +0 dBu
loudspeaker output	10 W, 4-16 Ohms
input impedance	10 k Ohms
output impedance	50 Ohms
headroom	20 dB
signal to noise ratio	85 dB
frequency response	20 Hz - 22 kHz

Echo and Noise Cancellation

total cancellation	65 dB
convergence rate	40 dB/second
noise cancellation	0-15 dB
echo cancellation	40 dB, total >65 dB
convergence	30 dB/second
cancellation span	32 ms
acoustic echo cancellation span	270 ms

Operating Environment

operating temperature	0 °C - 40 °C
status outputs	5 V, 20 mA each

Weight and Dimensions

width	483 mm
length	244 mm
height	45 mm
weight	1.8 kg
shipping weight	2.5 kg