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Polycom ® SoundStructure ® C-Series Models Truly immersive audio experience for voice and video conferencing Polycom ® SoundStructure ® installed audio solutions deliver high definition clarity to voice and video conferences for improved productivity and faster decision making. Advanced design and custom configuration capabilities allow you to quickly and efficiently deliver world-class audio quality to a variety of room environments. Seamless integration with Polycom video and voice conferencing solutions creates life-like experiences, with Polycom immersive and room telepresence solutions, Polycom ® HDX ® microphones, and Polycom Ceiling Microphone Arrays delivering unmatched video and voice collaboration quality. Controlling SoundStructure is easier than ever with Polycom Touch Control, an intuitive touchscreen controller that allows you to dial calls and precisely adjust audio levels in the room. SoundStructure C-Series installed audio solutions set a new standard in performance for immersive conferencing. Full-stereo acoustic echo cancellation, with 22kHz bandwidth and powerful feedback elimination, allows meeting participants to focus on the conversation without distraction. Comprehensive input, output and submix processing provides configuration flexibility and integrates all core audio processing into a single solution, eliminating the need and costs of additional equipment. Optional modular telephony interface cards expand functionality and provide investment protection. The innovative Polycom OBAM™ matrix architecture in SoundStructure enables up to eight SoundStructure units to appear as one system for unparalleled scale and flexibility. Advanced signal grouping, channel labeling and submixing let you leverage existing designs and configurations for future installations, saving time and money, while exclusive SoundStructure Studio software simplifies configuration and enables advanced system designs for existing and evolving needs. About Polycom Polycom is the global leader in standards-based unified communications (UC) solutions for telepresence, video, and voice powered by the Polycom ® RealPresence ® Platform. The RealPresence Platform interoperates with the broadest range of business, mobile, and social applications and devices. More than 400,000 organizations trust Polycom solutions to collaborate and meet face-to-face from any location for more productive and effective engagement with colleagues, partners, customers, specialists, and prospects. Polycom, together with its broad partner ecosystem, provides customers with the best TCO, scalability, and security for video collaboration, whether on-premises, hosted, or cloud-delivered. Visit www.polycom.com or connect with Polycom on Twitter, Facebook, and LinkedIn. DATA SHEET Benefits Breakthrough audio conferencing performance – Life-like voice conferencing with no compromises. The most powerful and flexible installed audio solution available. Easy installation and configuration, even for very large or complex systems – Innovations such as SoundStructure Studio configuration software and OBAMmake it easier than ever to deliver crisp, clear, life-like sound. Seamless integration with Polycom HDX ® solutions – Delivers the true Polycom UltimateHD™ experience for natural, life-like voice and video conferencing that raises productivity to a whole new level.
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Page 1: Polycom SoundStructure C-Series Models · Polycom is the global leader in standards-based unified communications (UC) solutions for telepresence, video, and voice powered by the Polycom

Polycom® SoundStructure® C-Series Models Truly immersive audio experience for voice and video conferencing

Polycom® SoundStructure® installed audio solutions deliver high definition clarity to voice and video conferences for improved productivity and faster decision making.

Advanced design and custom configuration capabilities allow you to quickly and efficiently deliver world-class audio quality to a variety of room environments. Seamless integration with Polycom video and voice conferencing solutions creates life-like experiences, with Polycom immersive and room telepresence solutions, Polycom® HDX® microphones, and Polycom Ceiling Microphone Arrays delivering unmatched video and voice collaboration quality. Controlling SoundStructure is easier than ever with Polycom Touch Control, an intuitive touchscreen controller that allows you to dial calls and precisely adjust audio levels in the room.

SoundStructure C-Series installed audio solutions set a new standard in performance for immersive conferencing. Full-stereo acoustic echo cancellation, with 22kHz bandwidth and powerful feedback elimination, allows meeting participants to focus on the conversation without distraction. Comprehensive input, output and submix processing provides configuration flexibility and integrates all core audio processing into a single solution, eliminating the need and costs of additional equipment. Optional modular telephony interface cards expand functionality and provide investment protection.

The innovative Polycom OBAM™ matrix architecture in SoundStructure enables up to eight SoundStructure units to appear as one system for unparalleled scale and flexibility. Advanced signal grouping, channel labeling and submixing let you leverage existing designs and configurations for future installations, saving time and money, while exclusive SoundStructure Studio software simplifies configuration and enables advanced system designs for existing and evolving needs.

About PolycomPolycom is the global leader in standards-based unified communications (UC) solutions for telepresence, video, and voice powered by the Polycom® RealPresence® Platform. The RealPresence Platform interoperates with the broadest range of business, mobile, and social applications and devices. More than 400,000 organizations trust Polycom solutions to collaborate and meet face-to-face from any location for more productive and effective engagement with colleagues, partners, customers, specialists, and prospects. Polycom, together with its broad partner ecosystem, provides customers with the best TCO, scalability, and security for video collaboration, whether on-premises, hosted, or cloud-delivered. Visit www.polycom.com or connect with Polycom on Twitter, Facebook, and LinkedIn.

DATA SHEET

Benefits

• Breakthroughaudioconferencing

performance – Life-like voice

conferencing with no compromises.

The most powerful and flexible

installed audio solution available.

• Easyinstallationandconfiguration,

evenforverylargeorcomplex

systems– Innovations such as

SoundStructure Studio configuration

software and OBAM™ make it easier

than ever to deliver crisp, clear,

life-like sound.

• SeamlessintegrationwithPolycom

HDX®solutions – Delivers the true

Polycom UltimateHD™ experience

for natural, life-like voice and video

conferencing that raises productivity

to a whole new level.

Page 2: Polycom SoundStructure C-Series Models · Polycom is the global leader in standards-based unified communications (UC) solutions for telepresence, video, and voice powered by the Polycom

Features and Benefits• UnrivaledStereoAcousticEchoCancellation(AEC)–

The only product with both monaural and stereo echo cancellation from 20Hz to 22 kHz – AEC with no compromises for more immersive meetings

• Breakthroughfeedbackelimination – Enables more flexible microphone, talker, loudspeaker placements and speech reinforcement delivering audio where you want it

• PolycomOBAM™matrixarchitecture – Connect multiple units together to create larger systems without the limitations of traditional bussing

• Allconferencingfeaturesavailableonallinputs – Eliminate the worries of running out of microphone inputs, since every feature is available on all inputs

• Gainsharingautomaticmicrophonemixer – Improved automixer experience ensures smoother transitions and robust performance in a variety of operating environments

• Provideexpandedfunctionalityandinvestmentprotection – Use modular single or dual-line PSTN, or VoIP telephony cards

• FullydigitalPolycomHDXintegration – Add powerful, configurable audio to your HD video solution

• PolycomTouchControl– Provides a simple-to-use interface for volume control, muting, and dialing of SoundStructure.

• UseHDXdigitalmicarrays – Compatible with both HDX digital mic arrays and traditional analog microphones (each HDX digital microphone requires the processing of three analog inputs)

•  Pushtotalkmicrophonesandotherapplications– Gain flexible support with logic inputs (contact closures) and outputs

• Powerfuleventsprogramming– Customize system behavior with the Polycom Touch Control, HDX telepresence solutions, HDX IR remotes, and more

• Passwordprotection– Prevents unauthorized users from accessing, controlling or making changes to the system

Polycom, Inc.1.800.POLYCOMwww.polycom.com

Polycom SoundStructure C-Series Models Specifications

805_0612

© 2012 POLYCOM, INC. ALL RIGHTS RESERVED. POLYCOM®, THE NAMES AND MARKS ASSOCIATED WITH POLYCOM’S PRODUCTS ARE TRADEMARKS AND/OR SERVICE MARKS OF POLYCOM, INC. AND ARE REGISTERED AND/OR

COMMON LAW MARKS IN THE UNITED STATES AND VARIOUS OTHER COUNTRIES. ALL OTHER TRADEMARKS ARE PROPERTY OF THEIR RESPECTIVE OWNERS. NO PORTION HEREOF MAY BE REPRODUCED OR TRANSMITTED IN

ANY FORM OR BY ANY MEANS, FOR ANY PURPOSE OTHER THAN THE RECIPIENT’S PERSONAL USE, WITHOUT THE EXPRESS WRITTEN PERMISSION OF POLYCOM.

SoundStructure StudioSoundStructure Studio is Polycom’s next-generation installed audio design and configuration software. Using SoundStructure Studio makes it possible to get your installed audio solutions up and running faster than you ever thought possible. It also makes it easier than ever to add and remove input and output signals through a single matrix view on one screen, and to provide default signal routings and gains based on the type of input or output signal.

The matrix page (above) shows the signal routing from inputs to outputs for all audio channels in the system. Groups of multiple signals can be collapsed and configured as a single channel or expanded and configured individually.

SoundStructure Studio channels page (left) allows for easy access to the settings for all the inputs and outputs for the entire system.

Page 3: Polycom SoundStructure C-Series Models · Polycom is the global leader in standards-based unified communications (UC) solutions for telepresence, video, and voice powered by the Polycom

Polycom® SoundStructure SR12Truly immersive audio experience for voice and video conferencing

The Polycom SoundStructure SR12 installed audio solution delivers powerful and flexible audio processing for any commercial sound application that does not require conferencing capabilities. Either alone or linked with up to seven additional systems, the SoundStructure SR12 system is an ideal solution for any sound

application, including houses of worship, stadiums, conference centers, hotels, night clubs, and restaurants. A powerful gain sharing automixer with automatic gain control on all inputs ensures consistent microphone pickup in all environments and flexible equalization, dynamics, and cross-over processing enable a broad range of applications. Feedback elimination on all inputs prevents embarrassing acoustic feedback and provides for flexible microphone and loudspeaker placement, and unrivaled noise cancellation technology removes the broadest range of background noises. A central matrix mixer that seamlessly scales from 12 up to 96 inputs and outputs makes setting up multi-zone audio systems a snap.

In addition, the SoundStructure model SR12 features the same flexibility and ease of installation as the SoundStructure C-Series conferencing products, and is a perfect way of adding 12 additional nonconferencing inputs (such as other line level audio sources) and outputs to a SoundStructure conferencing system. An innovative OBAM matrix architecture enables multiple SoundStructure units to work together as one large system for unparalleled scalability and flexibility. All SoundStructure products leverage advanced signal grouping, labeling and submixing that let you leverage yesterday’s work during today’s installation, saving time and money. Plus, exclusive SoundStructure Studio software from Polycom makes configuration easy, and is powerful enough to handle the most challenging acoustic designs.

About Polycom

Polycom is the global leader in standards-based unified communications (UC) solutions for telepresence, video, and voice powered by the Polycom® RealPresence® Platform. The RealPresence Platform interoperates with the broadest range of business, mobile, and social applications and devices. More than 400,000 organizations trust Polycom solutions to collaborate and meet face-to-face from any location for more productive and effective engagement with colleagues, partners, customers, specialists, and prospects. Polycom, together with its broad partner ecosystem, provides customers with the best TCO, scalability, and security for video collaboration, whether on-premises, hosted, or cloud-delivered. Visit www.polycom.com or connect with Polycom on Twitter, Facebook, and LinkedIn.

DATA SHEET

Benefits

• Breakthroughfeedbackelimination–

Enables more flexible microphone,

talker, and loudspeaker placements

and speech reinforcement

• Unrivalednoisecancellation

technology – Removes the broadest

range of background noises from your

audio inputs

• Gainsharingautomaticmicrophone

mixer– Improved automixer

experience ensures smoother

transitions and robust performance

in a variety of operating environments

• OBAM™matrixarchitecture– Connect

multiple units together to create larger

systems without the limitations of

traditional bussing

• SoundStructureStudio – Powerful

Windows-based software for efficient

design and configuration; use it to

easily set up a basic system, or use its

powerful customization tools for more

complex environments

• IntegratedEthernet– Control and

manage the system from anywhere

on the network

Page 4: Polycom SoundStructure C-Series Models · Polycom is the global leader in standards-based unified communications (UC) solutions for telepresence, video, and voice powered by the Polycom

Dimensions•  19” x 13.5” x 1.75” in (483 x 1343 x 45 mm)

(W x L x H) (one rack unit)Weight•  12 lbs. (5.5 kg) dry, 14 lbs. (6.4 kg) shipping•  Connectors•  RS-232: DB9F•  OBAM In/Out: IEEE 1394B•  CLINK2 : RJ45•  LAN: RJ45•  Control /Status: DB25F•  Audio: Mini (3.5mm) quick connect

terminal blocks•  IR Receive: Mini (3.5mm) quick connect

terminal blockPower and Thermal•  Internal supply•  Input voltage of 90-250 VAC; 50-60 Hz;

line power requirements (including 0.6 PF): 105VA (SR12)

•  Thermal dissipation (Btu/hr): 215 Btu/hr•  0 to 40°C operating temperatureInputs•  Phantom power: 48 V DC through

6.8kOhm series resistor per leg, 7.5mA per channel, software selectable

•  Analog input Gain: -20 to 64 dB on all inputs in 0.5 dB teps, software adjustable

•  Maximum input amplitude: +20.4 dBu, 1% THD + N

•  Nominal level: 0 dBu (0.775V rms)•  Equivalent input noise: <-122 dBu, 20 -

20,000 Hz, Rs=150 Ohms (1%)•  Input Impedance: 10 kOhms•  Input EMI Filter: Pi filter on all audio inputsOutputs•  Output Gain: -100 to 20 dBu in 1 dB steps,

software adjustable•  Maximum output amplitude: +23 dBu,

1% THD + N•  Nominal output level: 0 dBu (0.775 V rms)•  Output impedance: 50 Ohm, each leg to

ground, designed to drive loads > 600 Ohms•  Output EMI Filter: Pi filter on all audio outputsSystem1

•  Frequency response: 20-22,000 Hz, + 0.1 /- 0.3 dB

•  Idle channel noise: <-109 dB FS no weighting, 20 - 20,000 Hz, -60dB FS, 0.997 kHz input signal, 0 dB gain

•  Dynamic range: >109 dB FS no weighting, 20 - 20,000 Hz, -60 dB FS, 0.997 kHz input signal, 0 dB gain

•  Linearity: 0 dB FS to -122 dB FS +/- 1 dB•  THD+N: < 0.005%, -20 dB FS input signal•  Common Mode Rejection Ratio:

<-61 dB, 20 - 20,000 Hz, no weighting•  Cross talk: <-110 dB, 20-20,000 Hz, 1kHz,

channel-to-channel•  Latency: Mic/Line inputs to outputs:

5msec, 20 msec with NC processing enabled

•  Noise cancellation: 0-20 dB, software selectable

•  Control Inputs: Contact closure•  Status Outputs: Open collector 60V and

500mA maximum per output•  All signal ground pins connected

to chassis ground through low impedance planes

1 Unless noted, all values are valid for all channels at 0dB input gain

Polycom, Inc.1.800.POLYCOMwww.polycom.com

Polycom SoundStructure SR12 Specifications

809_0612

© 2012 POLYCOM, INC. ALL RIGHTS RESERVED. POLYCOM®, THE NAMES AND MARKS ASSOCIATED WITH POLYCOM’S PRODUCTS ARE TRADEMARKS AND/OR SERVICE MARKS OF POLYCOM, INC. AND ARE REGISTERED AND/OR

COMMON LAW MARKS IN THE UNITED STATES AND VARIOUS OTHER COUNTRIES. ALL OTHER TRADEMARKS ARE PROPERTY OF THEIR RESPECTIVE OWNERS. NO PORTION HEREOF MAY BE REPRODUCED OR TRANSMITTED IN

ANY FORM OR BY ANY MEANS, FOR ANY PURPOSE OTHER THAN THE RECIPIENT’S PERSONAL USE, WITHOUT THE EXPRESS WRITTEN PERMISSION OF POLYCOM.

Submix Input from Matrix

Submix output to Matrix

Dynamics Processing

Parametric Equalisation

Fader Delay

Submix Processing

D/A Converter

To Telco from Matrix

Output to PSTN Line

Dynamics Processing

Parametric Equalisation

Parametric Equalisation

Tone Generator

Delay

Line Echo Cancellation

Telephony Processing

Gain

A/D Converter

To Telco from Matrix

Intput from PSTN Line

Dynamics Processing

Fader

Fader

Delay Automatic

Gain Control

Call Progress Detection

Noise Cancellation Gain

Analogue

Analogue s s

Analogue

Analogue

s

Block Processing Diagram

Back of Unit

Page 5: Polycom SoundStructure C-Series Models · Polycom is the global leader in standards-based unified communications (UC) solutions for telepresence, video, and voice powered by the Polycom

Polycom® Vortex® EF2201 DSP-based phone add for

installed conferencing applications

Easily add calls to conferences – Utilise telephone hybrid with noise cancellation to add telephone callers

Simple, fully digital connection – Between Vortex EF2200 series products with EF Bus, no analogue input / output is required

Productivity-enhancing features – 256 speed-dial memory, selectable auto hang-up via loop drop and progress tone detection

Use it anywhere in the world – Country-specific telephone configuration settings

Consistent audio quality – Automatic gain control on the telephone audio receive path

The ideal “phone add” for installed conferencing applications, the EF2201 makes telephone interfacing easy. With a variety of control options, built-in DTMF dialer, and one-cable connection to other Vortex products, the EF2201 simplifies the addition of telephone calls to your audio or video conference.

When participants can’t make it to a video conference, or can only drop in for a short time, it’s easy to accommodate their needs. The Vortex EF2201 links directly to an analog (PSTN) telephone line, connecting outside callers to your meeting. In addition to providing crystal-clear telephone audio to all participants, the Vortex EF2201 significantly reduces background noise on the phone line, keeping unwanted sounds from interfering with your conference. As the next generation of digital hybrid telephone interfaces, the Vortex EF2201 interfaces with other Vortex products through a digital expansion bus.

Telephony signals are communicated with a Vortex EF2280 over the digital P-bus channel of the EF Bus, without the need for analog input or output on the EF2280. The EF2201 can be controlled via RS232, Vortex Expansion bus, and front panel controls. Additional features are audible ring indications, user-configurable entry and exit tones, up to 256 speed dial memories, and controllable levels of DTMF and dial tone signals. The full cross-point matrix allows users to determine how the input and output signals are sent to and from the telephony interface. Settings are configured with Conference Composer software (provided), and can be stored as user presets.

The direct-link audio choice for The Polycom Office™With integrated video, voice, data, and web capabilities, The Polycom Office is the only solution that offers you an easy way to connect, conference, and collaborate any way you want. The Polycom Office is our commitment to making distance communications as natural and interactive as being there. Work faster, smarter, and better with the Polycom Vortex EF2201 and The Polycom Office.

Page 6: Polycom SoundStructure C-Series Models · Polycom is the global leader in standards-based unified communications (UC) solutions for telepresence, video, and voice powered by the Polycom

Typical EF2201 Installation

www.polycom.com

Part No. 3726-82201-002 Rev. 03/03

Polycom® Vortex® EF2201

For your local Polycom office please visit www.polycom.com

Polycom Vortex EF2201 Technical Specifications

Dimensions• 483 mm (19”) W x 244 mm (9.6”) L x

45 mm (1.75”) H (one rack unit)

Weight• 1.8 kg (4 lbs.) dry, 2.5 kg (5.5 lbs.)

shipping

Connectors• RS-232: DB9F• EF Bus In/Out: RJ45• Control /Status: DB25F• Telephone Line/Set: RJ11 (2)

Power• External supply (provided)• Input voltage of 110-240 VAC;

47-63 Hz; power consumption 15 W (typical)

Microphone Input• -30 dBu to +0 dBu/ -66 dBu to -33

dBu, nominal; software selectable

Control Inputs• Contact closure

Status Outputs• 5 V, 20mA each

Headroom• 20 dB, nominal

Frequency Response• 250 Hz - 3.6 kHz on telephony

Interface Line Echo Canceller (telephone hybrid)• Echo cancellation 40 dB, total 60 dB• Convergence 30 dB/second• Cancellation span 32 msec

System Block Diagram and Rear Panel

RS-232

EF Bus

Control/Status

Matrixing

D/A

A/D

TLP

PEQNoise

CancellerCall Prog

DetectAGC

ParametersOn Off

LEC

PEQ

Mute

On OffParametersParameters

TLP (Telephone Line Processing)

ToneGen.

Phone

Telephone Line

EF Bus Telephone Line

©2008 Polycom, Inc. All rights reserved.Polycom, the Polycom logo, and Vortex are registered trademarks and The Polycom Office is a trademark of Polycom, Inc. in the U.S. and various countries. All other trademarks are the property of their respective companies. Specifications subject to change without notice.

Polycom EMEA270 Bath Road, Slough, Berkshire SL1 4DX, UK (T) +44 (0)1753 723000 (F) +44 (0)1753 723010

Polycom Headquarters4750 Willow Road, Pleasanton, CA 94588 (T) 1.800.POLYCOM (765.9266) for North America only

Polycom Asia Pacific8 Shenton Way#11-01 Temasek TowerSingapore 068811+65.6389.9200

Page 7: Polycom SoundStructure C-Series Models · Polycom is the global leader in standards-based unified communications (UC) solutions for telepresence, video, and voice powered by the Polycom

Enjoy clear, understandable conversation in all conferencing applications.

The Vortex EF2280 improves audio quality for conferencing, distance learning, and other installed applications

through industry-leading acoustic echo and noise cancellation - with support for up to 8 microphones.

The Vortex EF2280 automatically mixes microphones and other audio sources while cancelling acoustic

echoes and annoying background noise. It is typically installed at each site in a multi-site network and is

commonly used in applications such as boardrooms, courtrooms, distance learning, sound reinforcement,

and room combining. It connects easily to other equipment such as codecs, VCRs, or other A/V products.

The unit can be programmed from the front panel, or through Conference Composer™ software (included).

Conference Composer's InstantDesigner™ wizard ensures fast, accurate setup for a variety of applications.

A single Vortex EF2280 unit provides automatic mixing of up to eight microphones plus four auxiliary

audio sources. If more microphones are needed, additional Vortex EF2280 or Vortex EF2241 units can be

linked, up to a total of eight units. Number of Open Microphones (NOM) information can be specified across

all channels in the linked units. The microphone channels feature industry-leading acoustic echo cancellation

to prevent retransmission of signals to their original locations. A neural network Automatic Gain Control

(AGC) reacts only to valid speech patterns, bringing voices within desired levels. AGC controls are user

adjustable, as are settings for the five-band parametric EQ offered on all input and output channels and

output delay controls.

The high-quality audio choice to access the power of Polycom unified collaborative communications solutions.With the greatest breadth and depth of integrated video, voice, and Web solutions, only Polycom delivers the ultimate communications experience. Our market-leading conferencing and collaboration technologies,supported by world-class service, enable people and organizations to maximize their effectiveness and pro-ductivity. Add to that the most experience and proven best-practices in the industry, and it’s clear whyPolycom has become the smart choice for organizations seeking a strategic advantage in a real-time world.

Polycom® Vortex® EF2280Acoustic echo/noise canceller with automaticmicrophone/matrix mixer

Benefits

Industry leading audio quality – Designenhancements improve the audio experi-ence for even the most demanding listeningenvironments; support for the broadestrange of microphones in the industry

Hear every word with Polycom’sindustry-leading acoustic echo andnoise cancellation – Ensures the highestpossible audio quality between sites with20 kHz bandwidth, 270 ms tail length, morethan 10 dB of room gain, and a conver-gence rate of over 40 dB per second oneach mic/line channel

Integrated voice and video solution – May be linked with additionalVortex Installed Voice products includingVortex EF2201, Vortex EF2210, VortexEF2211, the Vortex EF2241 and VortexEF2280; Polycom’s SoundStation VTX1000™ wideband conference phone andPolycom’s video conferencing systemsincluding the VSX™ 7000 and 8000 product lines

Easy setup – Conference Composer™ andPolycom InstantDesigner™ software makeconfiguration fast and simple

Easy to operate – Controllable viaCrestron®, AMX® or other room control systems, RS-232, the Vortex EF-IR11infrared controller, or from the unit’s frontpanel; 16 factory presets and 32 user con-figurable presets allow quick selection ofoperating parameters

Adaptable to user requirements – User-programmable delays on all outputs, 5-bandparametric EQ on all inputs and outputs,intelligent Automatic Gain Control, 256macros, system diagnostics, and other tools ensure the best performance for all room conditions

Connect. Any Way You Want.

Page 8: Polycom SoundStructure C-Series Models · Polycom is the global leader in standards-based unified communications (UC) solutions for telepresence, video, and voice powered by the Polycom

Polycom Vortex EF2280 Specifications

Part No. 3726-82280-001 Rev. 10/04

www.polycom.com

Polycom Headquarters: 4750 Willow Road, Pleasanton, CA 94588 (T) 1.800.POLYCOM (765.9266) for North America only. For North America, Latin America and Caribbean (T) +1.925.924.6000, (F) +1.925.924.6100

Polycom EMEA: 270 Bath Road, Slough, Berkshire SL1 4DX, (T) +44 (0)1753 723000, (F) +44 (0)1753 723010

Polycom Asia Pacific: Polycom Hong Kong Ltd., Rm 1101 MassMutual Tower, 38 Gloucester Road, Wanchai, Hong Kong, (T) +852.2861.3113, (F)+852.2866.8028

Dimensions• 19” (483 mm) W x 9.6” (244 mm) L x 1.75” (45 mm) H (one

rack unit)

Weight• 4 lbs. (1.8 kg) dry, 5.5 lbs. (2.5 kg) shipping

Connectors• RS-232: DB9F• EF Bus In/Out: RJ45 • Control /Status: DB25F• Audio: Mini (3.5mm) quick connect terminal blocks

Power• External supply (provided)• Input voltage of 110-240 VAC; 47-63 Hz; power consump-

tion 30 W

Inputs• Phantom power: 48 V DC, software selectable• Analog input Gain: 0 to 30 dB Mic/line inputs in 1 dB

steps, software adjustable• Mic/Line switch gain: 33 dB• Maximum input amplitude: +19 dBu, 1% THD + N• Nominal level: 0 dBu (0.775V rms)• Equivalent input noise: <-124 dBu, 20 - 20,000 Hz• Input Impedance: 10 kOhms• Input EMI Filter: Pi filter on all audio inputs

Outputs• Output Gain: -100 to 20 dBu in 1 dB steps, software

adjustable• Maximum output amplitude: +23 dBu, 1% THD + N• Nominal output level: 0 dBu (0.775 V rms)• Output impedance: 33 Ohm, each leg to ground• Output EMI Filter: Pi filter on all audio outputs

System*• Frequency response: 20-20,000 Hz, + 0.2 /- 0.3 dB• Idle channel noise: <-100 dB FS "A" weighted, 20 - 20,000

Hz, 0 dB gain• Dynamic range: >100 dB FS "A" weighted, 20 - 20,000 Hz,

0 dB gain• Linearity: 0 dB FS to -110 dB FS +/- 1 dB• THD+N: < -90 dB FS• Common Mode Rejection Ratio: <-61 dB, 20 - 20,000 Hz,

no weighting• Cross talk: <-104 dB, 20-20,000 Hz, channel-to-channel• Latency: Mic/Line inputs to outputs: 13 ms, processing

enabled• Acoustic Echo Cancellation Span: 270 ms• Total Cancellation: >65 dB• Convergence Rate: 40 dB/second• Noise cancellation: 0-15 dB, software selectable• Operating Temperature: 0° - 40° C• Control Inputs: Contact closure• Status Outputs: 5 V, 20 mA each

*Unless noted, all values are valid for all channels at line level

©2004 Polycom, Inc. All rights reserved.

Polycom, the Polycom logo and Vortex are registered trademarks and SoundStation VTX 1000, Conference Composer, InstantDesigner and VSX are trademarks of Polycom, Inc. inthe U.S. and various countries. All other trademarks are the property of their respective companies. Specifications subject to change without notice. For Architect's and Engineer'sSpecifications, please visit Polycom.com, or contact the Installed Voice Business Group at 1.770.350.4140.

System Block Diagram and Rear Panel

Page 9: Polycom SoundStructure C-Series Models · Polycom is the global leader in standards-based unified communications (UC) solutions for telepresence, video, and voice powered by the Polycom

Polycom VSX 8000The ultimate in an easy-to-install, high performancevideo conferencing system

Polycom VSX 8000 Benefits

Form Factor – Sleek 1U rack mount designthat's perfect for integrated environments

Professional-Grade Connectivity –Phoenix-style audio connectors for balanced, line-level input and output aswell as S-Video, serial and VGA input andoutput for video

Solutions Oriented Interoperability –Designed to seamlessly integrate withPolycom Vortex Installed Voice Products,SoundStation VTX 1000™ conferencephone and Polycom MGC™ audio and video bridge products

Versatility in Peripheral Choice – Addon a touch panel control device, teletypedevice for closed-captioning, medical control device or secure encryption devices

Modular Network Interfaces – Use the10/100 Ethernet connection built-in or plugin a QBRI or PRI ISDN network module or a Serial (V.35/RS-530/RS-449) networkmodule

The Polycom Solution – Everything youneed to deploy and manage a completevideo conferencing network with PolycomGlobal Management System™, PolycomPathNavigator™, Polycom Conference Suiteand the Polycom MGC™

Connect. Any Way You Want.

A sleek rack mount design, professional grade connectivity andversatile interoperability make this product the perfect choicefor integrated and custom environments.

If you are looking for a video conferencing system that combines ease of installation with the highest quality audioand video, the Polycom VSX 8000 offers the perfect marriage of form and function.

The VSX 8000 is specially designed with professional integrators in mind. Starting with the slim, highly integrated,1U design including: professional grade connectivity, direct VGA input supporting People+Content™ collaborationand versatile slide-in trays to support circuit switched connectivity options (QBRI, PRI, Serial (V.35/RS4449/RS530).

Audio integration flexibility is unparalleled with Phoenix-style connectors, true balanced signals along with theability to support mixers, direct microphone inputs with phantom power as well the Polycom Digital Tabletop VSXMicrophones. Polycom’s patent pending Siren™ 14 Stereo Audio is an integral part of every system and is easilyconfigured for any room. Video participants can hear far-end participant’s voices project in stereo through left andright speakers for a truly life-like meeting experience.

The Polycom VSX 8000 delivers video performance that will impress even the most demanding customers using the industry’s most advanced video technologies, H.264 and Pro-Motion™. Standards based H.264 video offers out-standing video quality at call speeds up to 512 kbps, providing superior video without weighing down the network.For higher bandwidth calls, Pro-Motion, high-resolution, television-like video is an excellent choice for the absolutehighest quality picture.

The Polycom VSX 8000 offers a rich feature set including an easy to use, customizable user interface, AES encryption software, built-in quality of service and quality of experience with Polycom’s implementation of audio and videoerror concealment, SNMP support and Gatekeeper and Firewall utilities. Control of the VSX 8000 is accomplishedover multiple serial ports for complete API control by external control systems, a full range of IR options as well ascontrol passing with the popular Polycom Vortex Installed Voice Products. All in all, a complete package for integra-tors to design into a wide range of video conferencing applications.

The ultimate choice for professional integrators. The power of Polycom conferencing and collaboration solutions.With integrated video, voice, data, and Web capabilities, only Polycom solutions let your customers connect, conference, and collaborate anytime, anywhere and any way they want. It’s our commitment to making distancecommunications as natural and interactive as being there. Install systems faster, smarter, and more efficiently with Polycom VSX 8000 and other Polycom conferencing and collaboration solutions.

Page 10: Polycom SoundStructure C-Series Models · Polycom is the global leader in standards-based unified communications (UC) solutions for telepresence, video, and voice powered by the Polycom

Polycom VSX 8000 Specifications

Part No. 3726-17107-001 Rev. 6/04

www.ivci.com 1-800-224-7083

ITU H.323 and H.320 compliant

Bandwidth• Maximum Data Rate IP and Serial/V.35:

Up to 2 Mbps • Maximum Data Rate ISDN: Up to 2 Mbps

Video Standards & Protocols• H.261, Annex D• H.263+ Annexes: F, I, J, L, N, T • H.263++ Annexes: W• H.264• ITU 60-fps full screen – Pro-Motion™

Frame Rates (Point-to-Point) • Intelligently selects frame rate for best

performance video • 30 fps at 56 kbps up to 2 Mbps • 60 fields per second up to 2 Mbps

Video Inputs: 4 Connectors• 1 x S-Video; Professional Y/C BNCs (main

video camera)- 1 x DB15; PowerCam™ and PowerCam Plus

power, PTZ control, IR, mic input• 1 x S-Video; 4-pin mini DIN

(second camera with PTZ control) • 1 x S-Video; 4-pin mini DIN (VCR or DVD player)• 1 x VGA (Content input from laptop)

Serial Data Port: 2 Connectors• 2 x DB9• Control port for custom integration with remote

devices such as Crestron and AMX control systems• Integration with Polycom Vortex® Installed

Voice Products• Communication port for transmission of serial data

(i.e. medical devices) over ISDN calls• Auxiliary camera control

Video Outputs: 4 Connectors• 1 x S-Video; Professional Y/C BNCs (main display)• 1 x S-Video; 4-pin mini DIN (second display)• 1 x S-Video; 4-pin mini DIN (VCR or DVD player)• 1 x VGA (Content display)

Video Formats• NTSC/PAL• Graphics: XGA, SVGA, VGA

People Video Resolution • Pro-Motion interlaced video (60/50 fields full-screen

video for NTSC/PAL)• 4SIF (704 x 480)• 4CIF (704 x 576) • SIF (352 x 240) • CIF (352 x 288)• Choice of 4:3 or 16:9 display aspect ratios• Display People on VGA Second Monitor

Content Video Resolution• XGA (1024 x 768), SVGA (800 x 600), VGA (640 x

480) for Content on VGA displays • People video support for 4CIF and SIF on

VGA Display• Up to 4CIF for Content on NTSC/PAL displays

Audio Standards & Protocols• Polycom Siren 14 Stereo ready • 14 kHz bandwidth with Siren™ 14 on IP, ISDN, and

IP/ISDN mixed calls• 7 kHz bandwidth with G.722, G.722.1 • 3.4 kHz bandwidth with G.711, G.728, G.729A

Audio Features• Seamless integration with Polycom Vortex Installed

Voice Products • Audio add-in using SoundStation VTX 1000™

conference phone • Audio add-in over ISDN• Audio add-in over POTS• Full-duplex digital audio • Instant Adaptation Echo Cancellation• Automatic Gain Control (AGC) – Voice activated• Automatic Noise Suppression (ANS)• Ability to turn off Echo Cancellation when external

audio equipment is used

• Audio Mixer (Mic, VCR, line-in)• Built-in tonal speaker test • Real-time audio level meter for local and far-end

microphones• Microphone and VCR input audio mixing• Ability to talk over VCR audio

Audio Inputs: 6 Connectors• 1 x Conference link

- Supports up to (3) microphones - Supports SoundStation VTX 1000

conference phone• 2 x RCA/Phono, line level input for VCR, DVD player

or audio mixer• 2 x Phoenix connectors; balanced line level or direct

microphone inputs with 24 V Phantom power• 1 x RJ-11 for analog speaker telephone

Audio Outputs: 6 Connectors• 2 x Phoenix connectors; balanced line level output• 2 x RCA/Phono, Line Level output for VCR record• 2 x RCA/Phono, Line Level output for speakers

Other ITU-Supported Standards• H.221 communications• H.224/H.281 far-end camera control• Annex Q standard for FECC in H.323 calls• H.225, H.245, H.239, H.241• H.231 in multipoint calls• H.243 MCU password• H.233, H.234, H.235V3 encryption standards• Bonding, Mode 1

Network Interfaces Supported• IP (LAN, DSL, cable modem) • Single 10/100 Ethernet port (10 bps/100Mbps/Auto)• Optional ISDN QBRI (Basic Rate Interface) Module• Optional ISDN PRI (Primary Rate Interface) Module

T1/E1• Optional Serial Module (V.35/RS-530/RS-449 with

RS-366 dialing)

Network Features• Integration with Cisco Systems' CallManager

Version 4.0• Automatic IP/ISDN calling • Down speeding over IP and ISDN• Audio & Video Error Concealment over IP and ISDN,

mixed calls• IP address conflict warning• Fast Connect IP for quick video connections• Maximum call length digital timer• Auto SPID detection and line number configuration• MGC Click&View™ for individual screen layouts• Polycom OneDial™ intelligent call management

attempts call on preferred network (IP or ISDN) and automatically rolls over to secondary network if needed

• Polycom PathNavigator™ support for easy callplacement and network cost optimization

• TCP/IP, DNS, WINS, DHCP, ARP, HTTP, FTP, Telnet• Basic SIP* (Session Initiation Protocol)

implementation• Chair control through API command or Integrated

Web Interface • Software Upgradeable Inverse Multiplexer (IMUX)

Conference on Demand• Initiates unscheduled MGC calls from the endpoint• Utilizes Polycom Office (PathNavigator and MGC)• Auto selects either the internal or external bridge• Dials all participants simultaneously

Security • COMSEC tested by Titan Systems, Information

Security Systems Division, and independently vali-dated to operate with approved government encryp-tion technologies

• KG-194/KIV-7 encryptor support with on screen andaddress book dialing

• Enhanced integration for independently certified, classified encryption devices

• Account validation number entry• Secure password authentication • Unique factory default passwords• Administrator password

• Dial-in meeting password• Encrypted password for VSX Web access • Ability to disable remote interfaces (FTP, Telnet,

HTTP, SNMP)• Ability to disable mixed protocol multipoint calls• Auto-Answer (On/Off) • Allow access to user settings (On/Off)

Embedded Encryption• Advanced Encryption Standard (AES)• FIPS validated by National Institute of Standards

& Technology (NIST) certified agency • 128-bit key length• AES software encryption on ISDN, IP and Serial/V.35

up to 2 Mbps• Standards-based H.235V3 (IP)• Standards-based H.233/H.234 (ISDN/Serial)• Automatic key generation and exchange• Supported in People+Content™ • Supported in Point-to-Point IP, ISDN and mixed

network calls

User Interface• User-friendly graphical interface• Customizeable home screen and color themes• Kiosk mode with scrolling marquee• User-selectable camera icons and ring tones• Up to (99) user defined camera presets• Speed Dial List on home page • Persistent Preview (Far-site PIP) on all screens • Picture-In-Picture (PIP) (On/Off, Moveable)• Dual-Monitor Emulation• Numerical menu navigation (Similar to

mobile phone)• Date, Time Server accessibility• Calendar and Conference scheduling• Alert Signal on home page • Do Not Disturb (On/Off)• VSX Web for remote monitoring

Directory Services• 4,000+ number global directory • 1,000+ number local directory• Limitless multipoint entries• Live address book with Polycom Global Directory

Services automatically and quickly updates directorywith address changes or new endpoints

• Live address book with Polycom Global DirectoryServices automatically and quickly removes end-points from directory if they are turned off

• Polycom Global Directory Services integrates withActive Directory/LDAP

• Directory Server backup in the event Polycom GlobalDirectory is not accessible

• Automatic ISDN localization of calls

System Management• SNMP for enterprise management• Diagnostics and software upgrades via PC, LAN • Integrated VSX Web management tool• Web Director: Remote administrator video monitor-

ing and control from VSX Web (enabled/disabledfrom endpoint for security)

• Out-of-box setup from VSX Web• Place a call from VSX Web• Language independence between set-top interface

and VSX Web• System configuration from VSX Web• Recent Calls Log – Records last 99 incoming and

outgoing calls• Call Detail Record (CDR) – Reports all incoming and

outbound calls along with call statistics• CDR Feature On/Off • Downloadable CDR data for processing requires no

external management system • Account number validation at call initiation integrat-

ed with Polycom Global Management System™ forbilling purposes

• Administrator-configurable dialing speeds

• Complete support for The Polycom Office™ including:

- Polycom Global Management System- Polycom OneDial- Polycom PathNavigator - Polycom Conference Suite - Polycom MGC- Polycom SoundStation VTX 1000- Polycom Vortex®

Quality of Service and Experience – iPriority™• Video Error Concealment• Audio Error Concealment• Universal Plug and Play (UPnP)• IP Precedence (ToS)• DiffServ (DSCP) (COS)• Dynamic Bandwidth Allocation • Proactive Network Monitoring• Packet and jitter control • Network Address Translation (NAT) support• Automatic NAT discovery • Configurable video/audio/FECC service value• Asymmetric speed control• Alternate Gatekeeper support • TCP/UDP fixed-port firewall support• Lip synchronization • Echo cancellation • Echo suppression • Auto gatekeeper discovery• Automatic gateway dialing profiles• Specify outbound call routing for gateway/ISDN

Collaboration Solutions• Closed captioning support• Web Streaming in and out of a call, RTP based,

suitable with QuickTime players

System Options• People+Content (using ImageShare II)• PowerCam™ Plus Camera• PowerCam Camera• Polycom Digital Tabletop Microphone• Internal Multipoint Feature

Language Support (12 languages) Chinese (Simplified), Chinese (Traditional), English,French, German, Italian, Japanese, Korean,Norwegian, Portuguese, Russian, Spanish

- Documentation translations in all languages- User interface translations in all languages- Keypad audio dialing confirmation in

all languages- VSX Web translations in all languages- Remote controls labeled in all languages

Electrical • Auto sensing power supply• Operating voltage/power 90-250 VAC, 47-63 Hz/

80 watts

Environmental Specifications• Operating Temperature: 0-40˚ C• Operating Humidity: 15-80%• Non-Operating Temperature: -40-70˚ C• Non-Operating Humidity (Non-condensing): 10-90%

Physical Characteristics• Video Base Unit (W/H/D): 17.25"/1.73"/9.68";

438.15 mm/43.83 mm/245.85 mm• Video Base Unit Weight: 8.4 lbs; 3.8 kg

Polycom VSX 800 Warranty • One-year return to factory parts and labor• One-year software updates and upgrades

* SIP video extensions are in the process of being standards ratified.

©2004 Polycom, Inc. All rights reserved.

Polycom, the Polycom logo and Vortex are registered trademarks and VSX, Polycom PathNavigator, Global Management System, Siren, Pro-Motion, MGC, Click&View, PolycomOneDial, People+Content, The Polycom Office, iPriority, PowerCam and SoundStation VTX 1000 are trademarks of Polycom, Inc. All other trademarks are the property of their respective owners. Information in this document is subject to change without notice.

VSX 8000 shown with optional QBRI network module installed

Page 11: Polycom SoundStructure C-Series Models · Polycom is the global leader in standards-based unified communications (UC) solutions for telepresence, video, and voice powered by the Polycom

What is the Vortex line?

Polycom Vortex products provide advanced acoustic echo and noise

cancellation, automatic microphone mixing, room zoning, and other

functions for installed conferencing and collaboration applications.

Designed specifically for system integration, the Vortex line installs

easily with a wide range of video codecs, room audio components,

and controllers such as AMX® and Crestron®.

What products are available in the Vortex line?

Vortex EF2280 - provides 8 mic/line level inputs, 4 line level inputs,

12 line level outputs

Vortex EF2241 - provides 4 mic/line level inputs, 4 line level inputs,

8 line level outputs, a 10 Watt power amplifier, and a DSP-based

telephone hybrid for phone adds

Vortex EF2211 - provides 1 mic/line level input, 2 line level inputs, 3

line level outputs, a 10 Watt power amplifier, and a DSP-based

telephone hybrid

Vortex EF2210 - provides 1 mic/line level input, 2 line level inputs,

and 3 line level outputs

Vortex EF2201 - a DSP based telephone hybrid for phone adds,

designed to work in conjunction wih other Vortex products

What do the Vortex model numbers mean?

The Vortex products are numbered EF22XY where:

EF = Echo Free (a Polycom trademark)

22 = 22kHz wideband audio

X = the number of microphone inputs

Y = the number of phone adds (analog telephone lines)

For example, the Vortex EF2241 provides 22kHz wideband audio,

permits direct connection of 4 microphones, and has an integrated

phone add.

When should I use a Vortex product vs. tabletop?

A Vortex solution should be selected when you need to have multiple

microphones around the room, including wireless and ceiling micro-

phones, or distributed loudspeakers to provide full room coverage.

In larger rooms, 20'x20' and above, or when there are many partici-

pants, additional microphones and loudspeakers may be required to

allow all participants to hear and be heard clearly. Also, if multiple

telephone lines are required to allow multiple simultaneous callers,

the Vortex products should be used as they allow you to have up to

8 simultaneous telephone callers. If there are requirements for

wireless microphones, podium microphones, or multiple video

codecs, a Vortex should be used.

When using video conferencing, the Vortex will improve the audio

quality of your installations and can be used with nearly all Polycom

video codecs.

If the highest audio quality is a requirement, the Vortex will give

you the highest quality, the most flexibility, and the expandability to

support your future audio and conferencing needs.

How do I know which Vortex product to specify for my application?

If you are designing a room with several microphones, plan on

using the Vortex EF2241 or Vortex EF2280. These products provide

individual channel acoustic echo and noise cancellation, giving you

the best possible voice quality for multi-mic applications.

If you have a mixer already and would like to add teleconferencing,

the Vortex EF2211 (with built-in telephony interface) or Vortex

EF2210 will do the job nicely.

To add PSTN (analog) telephone calls to a voice or video confer-

ence, you can use the Vortex EF2241, Vortex EF2211, or the Vortex

EF2201. Vortex products can also interface with the Polycom

SoundStation VTX 1000TM, which gives users a familiar telephone

controller and can provide wideband (7kHz) telephone audio when

connected to another SoundStation VTX 1000 on the far end.

How many Vortex products can be linked together?

Up to 8 units* can be linked. This means you can use up to 64

microphones in a system using 8 Vortex EF2280 units. NOM (num-

ber of open microphones) information can be specified across all

linked Vortex units.

*The Vortex EF2280 and Vortex EF2201 phone add can share the

same device ID, allowing you to have up to 8 Vortex EF2280 units

AND 8 Vortex EF2201 units, if desired.

Polycom® Vortex® ProductsFrequently Asked Questions

Connect. Any Way You Want.

Page 12: Polycom SoundStructure C-Series Models · Polycom is the global leader in standards-based unified communications (UC) solutions for telepresence, video, and voice powered by the Polycom

What other Polycom products can be interfaced to Vortex products?

The Polycom SoundStation VTX 1000 wideband conference phone can be used

to add wideband telephony audio to a Vortex. The SoundStation VTX 1000 user

interface can be used to dial phone calls, mute the audio, and change the vol-

ume of the incoming wideband telephone audio.

In addition, the new Polycom VSX™ 8000 video conferencing codec interfaces

easily to the Vortex, with its infra-red remote control capable of executing com-

mands within the Vortex for volume control and muting Vortex microphones.

All Polycom video codecs, as well as those made by other companies, interface

easily with Vortex products, and Vortex can also be easily controlled with AMX

or Crestron control systems.

Are Vortex products difficult to install and set up?

Not at all! All connections use industry-standard connectors (Phoenix, DB9, etc.),

and our InstantDesigner™ setup wizard makes it possible to configure even the

most complex systems in a short time.

How does the Polycom InstantDesigner wizard work?

A recent addition to our Conference Composer™ design software for

Windows®, the patent pending Polycom InstantDesigner guides the system

designer through the steps required to create high performance Vortex audio

conferencing and sound reinforcement solutions.

The A/V integrator or consultant simply chooses the necessary inputs, outputs

(including the new Polycom VSX 7000 or VSX 8000 video codecs) and optionally

the sound reinforcement zones needed for the desired system, and Polycom

InstantDesigner automatically selects the appropriate Vortex devices necessary

to implement the system, maps the inputs and outputs to the devices, and cre-

ates the Conference Composer design files required to implement the design. It

is easy to upload these design files to the Vortex devices to complete the con-

figuration. All of this can be done within a matter of minutes.

The Polycom InstantDesigner handles all the details of creating zone to zone

gains for sound reinforcement, configuring the acoustic echo cancellers, inter-

facing to common audio and video equipment, bussing between devices, config-

uring presets, creating volume control macros, and preconfiguring logic ports for

push to talk microphones.

For more information, see the InstantDesigner application note (it may be down-

loaded in PDF format via the Polycom Resource Center on the internet).

How do I get a copy of the InstantDesigner software?

The InstantDesigner software is included in the Conference Composer software

and can be downloaded from the Polycom Resource Center at

http://extranet.polycom.com.

Is a remote control available for Vortex products?

Yes, the optional Vortex EF-IR11 infrared controller provides direct control of the

Vortex EF2280, EF2201, EF2211 and EF2241. It can be used to adjust volume,

mute and unmute audio, activate a phone line, dial out or answer calls, or exe-

cute any of 35 macros that are user-programmed into the Vortex units. And, as

noted earlier, Vortex products are easily controlled with external room con-

trollers such as Crestron or AMX.

What makes the Vortex Acoustic Echo Cancellation (AEC) better than

competing units?

The Vortex AEC has been designed to get the best trade-off between full-duplex

audio (quick interaction of both sides of a conversation) and removal of echo

when both sides of the conversation are moving about their rooms while both

sides are speaking. This is a measure of the doubletalk performance. Vortex

products also have the fastest convergence speed of any acoustic echo can-

celler on the market.

What is convergence speed and why is it important?

Convergence speed is how fast the AEC can adapt and "lock" onto to the local

echo and effectively begin removing it. You can think of convergence speed as

the rate at which audio from the remote site played into the local room will be

attenuated by the AEC before being sent back to the remote site. This is relat-

ed to convergence time, which is the amount of time it takes the AEC to reduce

the echo to some level. With most echo cancellers, before the AEC locks into

the echo, there is some amount of clipping that happens to the out going audio

to prevent an echo from being sent back to the remote side. This clipping

makes it difficult to have a natural full-duplex conversation. Because partici-

pants in a room are constantly moving, or the microphones are being moved or

muted, or the volume is being changed, the echo path is always changing.

Faster convergence means the AEC can lock onto changes in the room faster

and sound better faster.

Why does Polycom's Vortex sound better than other units?

There are several reasons including the full bandwidth of the signal (22kHz), the

digital trim pots that adjust the analog gain before the A/D converter (this maxi-

mizes the signal to noise ratio), and our patented ambient noise cancellation.

The Vortex's neural network-based AGC also helps the AEC performance by

bringing all signals to the proper level. Vortex units also provide better room

gain performance than competing products.

What is room gain and why is it important?

Room gain is the difference in level (in dB) between the outgoing level from the

room device to the incoming level to the room device. Factors that affect room

gain are the amount of amplification in the loudspeaker, the amount of gain

applied to the microphone inputs, and how closely coupled the microphones

and loudspeakers are.

Polycom Vortex Frequently Asked Questions

Page 13: Polycom SoundStructure C-Series Models · Polycom is the global leader in standards-based unified communications (UC) solutions for telepresence, video, and voice powered by the Polycom

Polycom Vortex Frequently Asked Questions

Rev. 08/04

www.polycom.com

Polycom Headquarters: 4750 Willow Road, Pleasanton, CA 94588 (T) 1.800.POLYCOM (765.9266) for North America only. For North America, Latin America and Caribbean (T) +1.925.924.6000, (F) +1.925.924.6100

Polycom EMEA: 270 Bath Road, Slough, Berkshire SL1 4DX, (T) +44 (0)1753 723000, (F) +44 (0)1753 723010

Polycom Asia Pacific: Polycom Hong Kong Ltd., Rm 1101 MassMutual Tower, 38 Gloucester Road, Wanchai, Hong Kong, (T) +852.2861.3113, (F)+852.2866.8028

Room gain is important because the acoustic echo canceller compares the sig-

nal that is sent to the amplifier/loudspeaker to the signal picked up by the

microphones. If the signal picked up by the microphones is much larger than

the signal sent to the amplifier/loudspeaker (which is the case if the room gain

is positive), many AECs have a tougher time removing the echo and may

become less full duplex.

For more information on room gain, see the Polycom application note on the

Vortex EF2280.

How is Polycom's noise canceller different from other products that say they

reduce noise?

Many products remove noise by filtering. When this happens, they will also

remove any signal in the same frequency band as the noise. The patented

Polycom noise canceller is different from other products because it uses an

adaptive frequency selective algorithm to remove the noise only where there is

noise and to leave the desired signals (speech, audio, etc.) alone.

The Polycom noise canceller works best with steady state signals, i.e., signals

that are random, but their randomness can be thought of as fixed. Example of

this are white or pink noise - the signal is random but the type of randomness is

known; periodic signals such as tones - the signal is steady state; and crowd

noise - a large collection of voices, when mixed together, sound like random

background noise. Combinations of these types of signals can also be effec-

tively removed such as the noise from power drills - there is a combination of

periodic signals and random noise. The types of noise that the Polycom noise

canceller cannot remove include short impulsive noises, like a hammer blow,

which are not present over a long enough time window to have the algorithm

adapt and remove it.

How does the Polycom AGC (Automatic Gain Control) work, and how is it differ-

ent from competing products?

Polycom's AGC algorithm uses a neural network to help make decisions about

what is speech and what is not speech. A neural network is an artificial intelli-

gence concept that is a form of nonlinear adaptive filter with a built-in state

machine. The neural net helps make a much better judgment on whether the

input data is speech-like every couple of hundred milliseconds. The Polycom

algorithm looks at the input signal and makes a determination as to whether

the signal is a valid speech input or not. Once it finds valid speech (and it is

always looking for valid speech), it will estimate the nominal level of the incom-

ing signal. It will then determine what level to apply to the signal to get it to a

0dBu nominal level. Other AGC algorithms may simply use the envelope of the

signal to determine if the signal should be increased or decreased. This has the

unintended consequence of training on background noise and making the signal

too loud if there is prolonged silence.

What type of automixers do the Vortex EF2280 and Vortex EF2241 use?

The automixer -- or more accurately, both automixers, since you can split the

mixer in each product-- in the Vortex EF2280 and Vortex EF2241 use a gating

style of automixing. The automixers make a determination of which signals

should be gated on and this decision gets translated into a decision of what

gain to apply to the input signal as it gets mixed with other signals to create an

output signal in the matrix. The automixer takes in up to 8 microphone/line

inputs in the Vortex EF2280 (4 in the Vortex EF2241) and produces the same

number of line output signals and gain information to be applied to each of

these gated outputs as they are used in the matrix. If you select the gated ver-

sion of an input at a cross point in the matrix then you will get the signal scaled

by the gain that the automixer has determined should be applied to that signal.

What types of filters and other parameters do the Vortex products provide?

User-programmable delays on all outputs, 5-band parametric EQ on all inputs

and outputs, 256 macros, 16 factory presets, 32 user-configurable presets, sys-

tem diagnostics and other tools are provided to ensure the best performance for

all room conditions.

© 2004 Polycom,Inc. All rights reserved. Polycom, the Polycom logo design and Vortex are registered trademarks and Conference Composer, InstantDesigner, VSX, and SoundStation VTX 1000are trademarks of Polycom, Inc. in the U.S. and various countries. All other trademarks are the property of their respective companies. Specifications are subject to change without notice.


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