Polycom Vortex EF2201 User manual

Presenting Vortex®Installed Voice Products
Next Generation Voice Conferencing
Application Note
Polycom Installed
Voice Business Group
November 2004

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1VORTEX EF2280/EF2241 FEATURES AND FUNCTIONS .........................................................2
2VORTEX EF2211/EF2210 FEATURES AND FUNCTIONS .........................................................3
3VORTEX EF2201 FEATURES AND FUNCTIONS ....................................................................4
4VORTEX PRODUCTS: WHAT’S NEW..................................................................................5
5SOME QUESTIONS AND ANSWERS .................................................................................6
6SYSTEM BLOCK DIAGRAMS..........................................................................................17
7VORTEX EF2280 INPUTS AND OUTPUTS..........................................................................20
8APPLICATIONS ............................................................................................................23
9AUTOMATIC MICROPHONE MIXING ..............................................................................24
10 AUDIO MATRIXING ...................................................................................................26
11 PRESETS AND MACROS ............................................................................................30
12 SERIAL REMOTE CONTROL.........................................................................................31
13 CONFERENCE COMPOSER SOFTWARE ........................................................................32
14 POLYCOM INSTANTDESIGNER V 2.0.................................................................35
15 FRONT PANEL CONTROL............................................................................................37
16 REMOTE CONTROL: LOGIC INPUT AND OUTPUT PINS...................................................39
17 LINKING MULTIPLE DEVICES......................................................................................40
18 VORTEX EF2280 SPECIFICATIONS ...............................................................................49
Revised: November 2004

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Welcome to Polycom’s Vortex®product line, designed specifically for the challenges of installed room conferencing applications.
The Vortex line currently comprises five products plus a number of accessories, and integrates easily with Polycom voice and video
products for a comprehensive conferencing experience that will please integrators and end users alike.
This paper will cover the key features and capabilities of the following Vortex products:
• Vortex EF2280, a 12 input/12 output, 8 channel acoustic echo and noise canceller with built-in automatic microphone
mixers, parametric EQ’s, AGC’s and matrix mixer.
• Vortex EF2241, an 8 input/8 output, 4 channel acoustic echo and noise canceller with built-in automatic microphone
mixers, DSP based telephone interface, power amplifier, matrix mixer and processing functions.
• Vortex EF2211, a 3 input/3 output, single channel acoustic echo and noise canceller with DSP based telephone interface
and power amplifier and processing functions.
• Vortex EF2210, a 3 input/3 output, single channel acoustic echo and noise canceller with power amplifier and processing
functions.
• Vortex EF2201, a DSP based telephone hybrid for connection to PSTN (analog) telephone lines.
Typical applications for Vortex products include video and audio teleconferencing rooms, distance learning classrooms, boardroom
audio systems, courtroom audio systems, and any facility where conferencing is required or may be necessary in the future.
All Vortex products include our Conference ComposerTM software for Windows®, featuring the Polycom InstantDesignerTM Vortex
setup wizard. We invite you to download the Conference Composer software for your evaluation. You may find it on our website
at www.polycom.com or e-mail us and we will send you a CD-ROM.
For a demo of the Vortex EF2280 or any of our other Vortex products, call the Polycom Installed Voice Business Group anytime at:
1-800-932-2774.
Polycom, Inc.
Installed Voice Business Group
9040 Roswell Road, Suite 450
Atlanta, GA 30350
Phone: [phone]
Fax: [phone]
[email protected]
www.polycom.com

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The Vortex EF2280 is a 12 input/12 output, 8 channel acoustic echo and noise canceller with built-in automatic microphone mixers,
parametric EQ’s, AGC’s and matrix mixer. The Vortex EF2241 is an 8 input/8 output, 4 channel acoustic echo and noise canceller
with automatic mixing, parametric EQ’s, AGC’s, matrix mixer, telephone hybrid and power amp. These products’ key features are:
• Multiple channels of mic/line acoustic echo cancellation (AEC), noise cancellation (NC), and automatic gain control (AGC).
• 48 VDC phantom power on microphone inputs, software selectable.
• 40 dB/second convergence rate on each AEC channel.
• 270 msec tail time.
• 20dB headroom on all channels.
• 12 line level outputs on Vortex EF2280; 8 line level outputs on Vortex EF2241 (0dBu nominal level), user adjustable.
• Polycom patented noise cancellation algorithms remove steady-state noise signals on microphone inputs (and on telephone
line output in Vortex EF2241); user adjustable up to 15 dB of noise reduction.
• 5-band parametric filters for input and output equalization on each of the inputs and outputs.
• Digitally controlled analog trim pots on A/D inputs for precise input level adjustment.
• 24-bit codecs, 32-bit floating-point processing.
• 48kHz sample rate ⇒22 kHz bandwidth on all channels.
• RS-232 for interface to control systems and Conference Composer software.
• 24 configurable logic input pins and 20 configurable logic output status pins.
• High speed, low-delay EF expansion bus links Vortex devices.
• 32 user presets, 16 factory presets, 256 macros (each up to 256 commands).
• Scalable automatic microphone mixer – supports up to 64 microphones or can be arbitrarily split into 2 automixers per Vortex.
• Fully controllable 25x18 cross point main matrix with arbitrary gain on cross-points (1dB increments on level).
• Configurable cross point mix-minus interface from the expansion bus to the main matrix: select only the channels from the bus
that you want!
• Conference Composer software for easy configuration, project management, and project documentation.
• InstantDesigner setup wizard reduces configuration time from hours to minutes – its capabilities will amaze you!
• Front panel LCD for controlling and configuring the product without a computer.
• Internal signal generator for noise masking applications and calibration.

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• Single channel of mic/line acoustic echo cancellation (AEC), noise cancellation (NC), and automatic gain control (AGC).
• 48 VDC phantom power on microphone input, software selectable.
• 2 line level inputs with adjustable input level.
• 40 dB/second convergence rate on each AEC channel.
• 270 msec tail time.
• 20dB headroom on all channels.
• 3 line level outputs (0dBu nominal level), user adjustable.
• Polycom patented noise cancellation algorithms remove steady-state noise signals on mic/line input (and on telephone line
output in Vortex EF2211); user adjustable up to 15 dB of noise reduction.
• 5-band parametric filters for input and output equalization on each of the inputs and outputs.
• Digitally controlled analog trim pots on A/D inputs for precise input level adjustment.
• 24-bit codecs, 32-bit floating-point processing.
• 48kHz sample rate ⇒22 kHz bandwidth on all channels.
• RS-232 for interface to control systems and Conference Composer software.
• 24 configurable logic input pins and 20 configurable logic output status pins.
• High speed, low-delay EF expansion bus links up to 8 Vortex devices with 4 channels per device plus AEC reference.
• 32 user presets, 16 factory presets, 256 macros (each up to 256 commands).
• Conference Composer software for easy configuration, project management, and project documentation.
• InstantDesigner setup wizard reduces configuration time from hours to minutes – its capabilities will amaze you!
• Front panel LCD for controlling and configuring the product without a computer.
• Internal signal generator for noise masking applications and calibration.