Unified Conferencing: What is it

Unified Conferencing: Why Unified Conferencing? What is it? What are the benefits? How to implement it.

Unified Conferencing: Why Unified Conferencing?
What is it?
What are the benefits?

How to implement it.

Technical White Paper

Document Overview

This document provides an overview of
the issues, capabilities and benefits to be
expected from a single platform solution
for voice, video and unified conferencing.
What can be expected in a unified
conference experience, and the benefits of
having this capability is also provided.

Polycom Unified Conferencing addresses
these challenges with revolutionary, truly
converged conferencing on one MGC
platform.

1


Table Of Contents

INTRODUCTION............................................................................................... 3

WHY UNIFIED CONFERENCING? .................................................................. 4
Separated Conferencing Architecture Creates Multiple Barriers ............................................... 4

Meetings At A Distance Need To Do More............................................................................... 6

WHAT IS IT ?.................................................................................................... 6
One Platform .............................................................................................................................. 6

One Conference, One Conference Experience ........................................................................... 7
Conference Entry Queue ........................................................................................................ 7
Conference Management........................................................................................................ 7
Presentation Of Content And Collaboration........................................................................... 8

WHAT ARE THE BENEFITS OF UNIFIED CONFERENCING ? ..................... 8
Flexible Meeting Options, Anytime, AnyPlace ......................................................................... 8

More Robust, Productive Meetings............................................................................................ 8

More Productive Conference Support ........................................................................................ 9

Superior Return On Investment.................................................................................................. 9

HOW TO IMPLEMENT IT. ................................................................................ 9
Polycom Unified Conferencing Built On MGC Technology..................................................... 9

Supports Multiple Networks..................................................................................................... 10

Ease Of System And Conference Support................................................................................ 11

Feature Rich.............................................................................................................................. 11

Flexible Deployment Options................................................................................................... 13

Superior Return On Investment................................................................................................ 13

THE POLYCOM OFFICE................................................................................ 13

SUMMARY: POLYCOM UNIFIED CONFERENCING BENEFITS................. 14

2


Introduction
With ever-increasing deployments of voice and video bridging infrastructure, as well as Web
collaboration, end users are demanding much more than “plain vanilla” conferencing services.
End users now want the ability to:

Integrate voice, video and web collaboration into the same conference
Have simple, intuitive user interfaces
Have ad hoc conference service support, regardless of communications media

Networks today are delivering:

An ever-expanding range of network technologies
An increasing range of endpoints with different communications media and network
connectivity

Decisions to invest in infrastructure and conferencing technologies are getting more complex,
with a wide array of equipment, software, and network choices, and uncertainty about where
these technologies and their end users are headed. As a result, support personnel require help
in making these decisions, as well as alternatives that minimize the risk of the investment
decisions they are required to make.

Today’s separated communications and conferencing technologies reside on different
networks and, different platforms, requiring different management interfaces for support.
These communication boundaries are major barriers to the effective deployment of mixed /
feature rich media conferencing services. A unified conferencing solution that supports
unified conferencing services, and that can be managed with a single management interface, is
required to overcome the complexities associated with these historical barriers.

To provide effective voice and video conferencing services, organizations are looking for a
converged solution, a solution that will answer all the above challenges. There is a need for a
unified conferencing bridge that can seamlessly connect voice and video end points to the
same conference, on the same platform, with the same robust features and management
interfaces for both end users and system support.

3


Why Unified Conferencing?
Voice and video conferencing products and services are well established, heavily demanded
solutions to business and consumer needs to communicate, and to work with others, at
geographically dispersed locations. Voice and video multipoint and gateway conferencing
solutions have followed different development paths on different platforms, creating
complexity, increased costs, and separated conferencing solutions, with significant differences
in conferencing features.

These islands of conferencing technologies, products, and services are not capable of the
flexibility needed in today’s world to deliver a scheduled or ad hoc conference that can
seamlessly connect all needed participants, regardless of their location, voice or video
endpoint or network connection. These limitations are more significant today with the global
trend towards a mobile workforce, dispersed geographically among different business and
home office locations. Using a contract workforce to perform office, technical, and
professional jobs and projects is now a common business practice and another key trend that
creates more need for a converged conferencing solution.

The huge differences in interactive communication features between today’s voice and video
conferencing products and services translate into huge differences in conference productivity.

A truly converged conference that seamlessly connects voice and video participants into a
conference must have a common set of conference features and end user interfaces if it is to
be a productive conferencing solution. This means that the level of shared conferencing
features must be set at the highest, not the lowest level, of features. This means that robust
voice conferencing features with IVR/DTMF interfaces must be supported by video endpoints
in a video or converged conference, creating a truly unified conferencing experience.

Separated Conferencing Architecture Creates Multiple Barriers
The technical barriers to having the capability to conduct a truly converged, unified
conference of voice and video participants, are greater when issues of different switched,
dedicated, and packet networks and support are considered.

Many large, businesses and institutions that have a geographically dispersed workforce and/or
customers have moved from a public voice or video conferencing service to an in-house based
conferencing service. Almost none of the businesses and institutions have brought both voice
and video conferencing services in-house. The answer to the “why not” question is that
separate conferencing platforms, separate management systems, and separate network
services supporting voice and video conferencing require duplicate costs, duplicate training,
duplicate support and less productivity.

The following graphic depiction of separated voice, video and data conferencing platforms
on separate networks highlights several other significant technical barriers to delivery of a
simple, intuitive unified conferencing solution. Without robust and automatic capabilities to
transcode across different audio and video algorithms, different network protocols, and

4


transmission data rates, connection of different voice and video endpoints across different
networks will not be seamless. In fact it will not be possible to achieve an acceptable level of
reliable conference set-up.

Current Separated Conference Architecture

Packet Switched Networks Circuit Switched Networks

PSTN
Phone
PBX
Call Manager Audio
IP
Phone VOIP Bridge
Gateway
Cell
Voice Network Phoneone

Limited Connectivity Limited Interoperability

H.323 Video
Video Gateway H.320
Video
Gatekeeper Video
Bridge
Video Network
Separate
Limited Control
Management
Systems
Web
PC – Web Conference T.120
Browser Server Conference
Server PC -
NetMeeting
eting
Data Network

Like any meeting, meetings at a distance very often require the delivery of content and
application-based collaboration. These service capabilities are different for voice and video
conferencing with, in-band delivery of content and collaboration in a videoconference, and
web based service used in voice conferences.

The current separated conferencing architecture also means different end user interfaces,
leading to less productivity during the conference, as well as creating a barrier to end user
cross-over from their current, familiar conferencing service to another unfamiliar
conferencing service, even though that service may be more appropriate for their conference
application.

5


Meetings At A Distance Need To Do More
Most businesses, organizations, governments, and institutions use voice and/or video
conferencing services on a regular basis. Many now regularly use Web-based collaboration
services in conjunction with audio conferencing services. Growth in demand for these
conferencing services has consistently been strong and is, in fact, accelerating for Web
collaboration services, resulting in increasing demand for related audio conferencing.

Increasingly dispersed and mobile workforce, markets, and customers are not the only trends
driving demand for these conferencing services. Issues of costs, productivity, security, travel,
and family are also now key drivers of need and demand for voice, video and web
collaboration conferencing services.

The limitations of separate conferencing solutions, with huge differences in connectivity,
features, interfaces, and productivity, are technical barriers that must be overcome to be able
to connect from anywhere, anytime into a unified, feature rich, highly productive, meeting at
a distance. There needs to be flexibility to support whichever voice, video or unified
conference that is most appropriate for the customer application with the same set of features
and interfaces.

What is it ?

One Platform
Unified conferencing supports ISDN video, IP video, PSTN voice, VoIP, and mixed
voice/video conferences simultaneously on one platform, with the same set of conferencing
features, one set of end user interfaces, and one management application. Key technologies
required to support unified conferencing include:

Full, automatic transcoding
Multi-network support for switched, packet and dedicated networks
Resource sharing of software and hardware resources
One management application to support the conferencing platform as well as voice,
video and unified conferences
One set of interfaces that the end user uses to schedule and manage their voice, video
and unified conferences

A unified conferencing solution must be able to support both scheduled and ad hoc
conferencing services, as end user demand for scheduled and ad hoc conferences varies by
conference application, by type of conferencing services (voice, video and web), and by
organization. To concurrently support both scheduled and ad hoc conferences, without having
serious resource contention problems, priorities and rules for system resource allocations and
conflict resolution between scheduled and ad hoc conferences must be enforced by the unified
conferencing bridge.

6


One Conference, One Conference Experience
A unified conference seamlessly connects a mix of voice and video endpoints on different
networks to one conference, on one platform that provides each conference participant with
the same conference experience.

Conference Entry Queue

At its simplest level, unified conferencing is a single phone number that all voice and video
participants use to enter the same conference entry queue, regardless of whether they are on
switched or packet networks. To initiate an ad hoc conference, the conference chairperson
needs only to dial the single number assigned to their personal virtual meeting room. All other
conference participants can join the conference using the same number and conference PIN
code.

Each voice (PSTN and VoIP) and video (ISDN and IP) participant enters the same conference
entry queue. As they enter the entry queue, each voice and video participant hears the same
IVR greeting and prompt to enter the conference PIN code. Each voice and video participant
then using their endpoint keypad or keyboard enters the conference PIN code. Different IVR
messages services could also be selected to require a chairperson PIN code and/or a billing
code.

When the requested PIN codes are entered correctly, each voice and video conference
participant is prompted to record their name, that is used to announce new participants as they
enter the conference, during the conference when there is a request to hear the roster of
conference participants, and when a participant exits the conference.

Conference Management

Once all voice and video participants have entered the conference, the conference chairperson
and all conference participants (voice and video) have available to them the full set of voice
conferencing features that can be accessed with IVR/DTMF. Chairperson conference
management features that can be controlled from either a voice or video endpoint should
include:

Conference security (lock and unlock the conference)
Put conference on-hold
Invite new conference participants, delete participants (voice or video)
Request operator assistance for the conference
Mute all participants audio, except the chairperson audio
Request roll call of all conference participant names
Extend or terminate the conference
Initiate and terminate question and answer sessions
Initiate voting/polling sessions, monitor and email results

7


Presentation Of Content And Collaboration

The feature capability to present meeting content, and to have interactive collaboration, exists
today in the separate worlds of voice and video conferencing. In a videoconference, delivery
of content and collaboration is embedded in the data stream used to transmit both voice and
video. In a voice conference, the transmission of content and collaboration is accomplished
over the IP LAN and/or Internet. In-band transmission of content and collaboration in a
videoconference excludes the participation of voice participants in this critical part of the
conference.

A truly unified conference must include a unified experience of content presentation and data
collaboration. The best solution to address this requirement is web-server-based, enabling
every conference participant to receive the content presentation and to fully participate in
applications-sharing and white-boarding sessions, regardless of their location and network
access.

Using the features supported in today’s web conferencing products, the conference
chairperson can conduct a one-way or interactive presentation of content that allows the
chairperson and all conference participants to view, highlight, and annotate specific points of
the presentation. If the unified conference requires workgroup collaboration, this also can be
accomplished in a one-way or interactive format, using application-sharing and
white-boarding.

An added advantage of using a web-server-based solution, for a unified experience of content
presentation and collaboration, is the ability to use Instant Messaging during the conference.
With Instant Messaging in a unified conference, the conference participants have a greatly
enhanced capability to interact without disrupting the flow and focus of the conference.

Important features that the conference chairperson (voice or video endpoint) has available to
manage participant interaction during the presentation and conference includes “mute/unmute
all but me”, question and answer sessions, and voting/polling sessions.

What Are The Benefits Of Unified Conferencing ?

Flexible Meeting Options, Anytime, AnyPlace
One of the most important benefits of a unified conferencing solution is the flexibility to start
a conference when it is needed (scheduled or ad hoc), that includes the appropriate conference
participants regardless of their location, the capabilities of their endpoint equipment, or their
network connection.

More Robust, Productive Meetings
Merging the best features and capabilities of voice and video conferencing into a unified
conferencing experience creates a uniquely robust and more productive meeting environment.

8


More Productive Conference Support
The gains in support productivity that come with a single platform, single management
system supporting both voice and video conferencing, provides a powerful justification for the
unified conferencing product solution.

Superior Return On Investment
Unified conferencing eliminates the need to make duplicate investments in voice and video
conferencing equipment and upgrades. Network services do have to be duplicated. Training
costs are significantly reduced for support and end users. Manpower required for operations
support is significantly reduced.

How To Implement It.
Polycom has taken the best of the industry leading Polycom VideoPlusTM and Polycom
VoicePlus conferencing products and developed Polycom Unified Conferencing that takes
conferencing to the new level needed to provide truly converged, feature rich conferencing.
Polycom Unified Conferencing is the first solution in the industry to offer full-featured voice
and video on a single platform, in the same conference, with the same set of conference
features and end user interfaces.

All of the conference features of a feature rich voice conference are now provided in a
Polycom unified voice and videoconference. Any combination of conferencing features, such
as roll call, conference invite, mute/unmute, questions and answers, voting / polling, and even
request for operator assistance, can be utilized by all conference participants using their voice
or video endpoint keypad or key-board.

Polycom Unified Conferencing takes multipoint conferencing to a new level that adds
significant value and increased productivity well beyond traditional voice and video
meetings-at-a-distance.

Polycom Unified Conferencing Built On MGC Technology
Polycom developed the Multipoint Gateway Controller (MGC) conferencing bridge to
support multipoint and gateway conferencing that seamlessly bridges conferences across
different networks, as well as different endpoints, with different communications media
support and performance capabilities. Automatic transcoding of differences in audio and
video algorithms, video resolution, video frame rates, transmission rates, and network
protocols are integral to the MGC architecture. Transcoding capability across these
technology boundaries is an essential feature of the Polycom MGC, enabling support of ISDN
video, IP video, PSTN voice, and VoIP conferences on a single platform.

9


The MGC architecture also includes the ability to share hardware and software resources
across all switched and IP video, voice, and mixed video/voice conferences. Key benefits of
the MGC shared resource design include lower costs of equipment needed to support video
and voice conferencing, improved resource module backup, and more efficient use of
platform “real estate” that can be used for future system upgrades.

Polycom’s MGC conferencing bridge is designed to deliver high levels of system reliability
and ease of support. Hardware modules and power supplies are all accessible from the front of
Polycom’s MGC 50 and MGC 100 platforms, and are hot-swappable. The self-configuring
design of the MGC 50/100 hardware modules means that replacing a module does not require
an engineer or a technician.

For enterprises that require workgroup and distributed deployments of unified conferencing,
Polycom provides the compact MGC 25 platform in standard configurations.

The diagnostic and fault resolution capabilities of all Polycom MGC platforms enable
effective remote diagnostics of alarms down to the DSP level. These combined system
capabilities, with the shared resource architecture of the MGC, results in the high levels of
system reliability and ease of support needed for an effective Unified Conferencing Bridge
solution.

Supports Multiple Networks
Polycom Unified Conferencing streamlines voice and video services by providing a single
entry point to multiple networks, protocols, standards, and services integrated for IP, ISDN,
POTS, and wireless (cellular) multipoint and gateway conferencing applications. The ability
to seamlessly provide video and voice communications connectivity, from anywhere to
anywhere, across different networks on the same platform, is a major benefit that should be
demanded from a single conferencing platform solution. The complete and automatic
transcoding capabilities of the MGC are essential to achieving this key benefit.

The resource sharing design of the Polycom MGC provides the opportunity to reduce the
required investment in network resource interfaces. It also provides the opportunity to reduce
the costs of network service, as the same switched or IP network connections can be used to
support ISDN video, IP video, PSTN voice, and VoIP conferences.

The capability of the MGC to support multiple networks on a single conferencing platform
also brings important benefits in future migrations to new system support for additional
network protocols and standards. The fact that these migrations, like ISDN video and voice to
IP networks, occur over many years, is a very important reason why an effective single
conferencing bridge solution is needed to address the complexity, increased costs, and
inefficiency in supporting different multipoint and gateway conferencing platforms.

The MGC capability to use the same IP resources to support video and/or voice multipoint
and gateway conferences means that decisions and investments in IP are leveraged in the
ability to support the migration to IP video and voice, at whatever rate it occurs.

10


Ease Of System And Conference Support
A key requirement and benefit of a single platform conferencing bridge is that both the system
and the conferences are easy to support, both from a support and end user perspective. A key
component of system reliability is having a management application that enables easy
monitoring of conferencing operations, to quickly resolve any system or conference alarm.

Polycom’s answer to this requirement is the MGC Manager, a Windows-based system and
conference management application that enables support to manage either a single or an entire
network of MGCs. From the MGC Manager application window, video and voice conferences
are scheduled and managed, conferences and systems can be monitored for alarms, and
problems are resolved. Hardware alarms can be diagnosed down to the DSP level, and reset or
taken off-line to allow continued use of all other hardware resources for video and voice
conference support.

Maintaining the MGC platform at current release levels of software is a simple download of
the latest release of the MGC operating system. The MGC automatically upgrades the
software level of hardware modules, whenever a new software release is downloaded.

At the enduser level, the requirement for management tools and interfaces that are simple and
easy to use is equally important. The benefits of a single conferencing platform solution are
significantly reduced if the end user must learn to use different interfaces in scheduling and
managing their video and voice conferences. Different user interfaces means: more end user
training, more end user errors that require more support, and less crossover utilization of
different conferencing media.

Polycom’s Web Commander is a browser-based interface for end users to schedule and
manage voice, video or unified conferences on a single or multiple network of MGC
gateways, MCUs, and Unified Conferencing Bridges. All voice and video end users also have
the same IVR/DTMF interfaces to all of the conferencing features that are supported in a
Polycom VoicePlus conference.

Having a single interface to access and manage any combination of video and voice
conferences, whether the network is switched, dedicated, or IP, means that meetings will be
more productive and will use the communications media that best addresses the end user’s
conference requirements.

Feature Rich
Ease and simplicity of use are not of sufficient benefit to have an effective single
conferencing platform solution, if it does not also support the full set of video and voice
conferencing features required by the end user. Most of today’s video MCUs are capable of
supporting either ISDN or IP videoconferences, with expected conferencing features, as well
as multipoint ISDN or IP voice conferences. In the latter case, the voice conferencing
capabilities of these video MCUs do not include the voice conferencing features that the end
user expects. The lack of features such as roll call, voting and polling, and IVR/DTMF

11


interfaces are key reasons why these solutions for video conferencing have not displaced any
significant share of voice conferencing services or equipment sales.

Polycom Unified Conferencing provides the end user with fully featured video and voice
conferencing capabilities that are also, in many cases, replicated across these different
conferencing environments. Support for attended, unattended, and ad hoc voice, video and
unified conferencing services provides both the end user and operations support with
important service level consistency, as well as the flexibility to use a level of service that best
supports the needs of the conference. Equally important in this regard is a consistent interface
for the end user to schedule and/or manage their conferences.

Polycom’s Web Commander is the only browser-based interface the end user requires to
schedule or manage a video, voice, or mixed conference on the Polycom Unified
Conferencing Bridge. Polycom’s Web Commander also supports the integration of video and
voice conferences with Web-based collaboration, the Polycom WebOfficeTM. The integration
of voice and video conferencing services with Web collaboration is now a baseline service
capability that a single conferencing platform solution should address.

Integration of conferencing features and services is the direction that end users are expecting
and vendors are rapidly developing. By definition, a single conferencing platform solution
should offer both a rich selection of possible conferencing features, and a seamless integration
of different conferencing and communications media.

Polycom Unified Conferencing Architecture
Packet Switched Networks Circuit Switched Networks

PSTN
Phone
PBX
Call Manager Audio
IP
Phone VOIP Bridge
Gateway
Cell
Voice Network Phoneone

Total Connectivity Complete Interoperability

H.323
Video H.320
Video
Gatekeeper Video
Bridge
Video Network
Common
Full Control
Management
Web Systems
PC – Web Conference T.120
Browser Server Conference
Server PC -
NetMeeting
eting
Data Network

12


Flexible Deployment Options
Polycom MGC Unified Conferencing supports the flexible deployment of multipoint and
gateway conferencing capabilities, whenever and wherever they are needed. The MGC-25
(2U) platform, MGC-50 (8 slot) platform, or an MGC-100 (16 slot) platform can be selected
to configure a video and/or voice multipoint, gateway, or unified conferencing system
configuration.

As requirements for video and voice multipoint and gateway conferencing change, upgrades
to add additional video and/or voice conference capabilities can be easily accomplished with
the addition of the appropriate hardware resource modules and software support. All MGCs,
regardless of configuration and conference support capabilities, use the same platforms,
hardware resource modules, and operating system software, making it both easy and cost-
effective to support a network of systems. Any or all can be easily upgraded to the full
conferencing capabilities of a single platform MGC Unified Conferencing Bridge.

Superior Return On Investment
A single multi-point and gateway conferencing platform should deliver feature-rich service
level capabilities and seamless integration of media.

The most important deliverable is a very attractive return on investment. This is inherent in
the purpose of having a single platform solution. In this regard, the design capability of the
Polycom Unified Conferencing MGC platform to share software and hardware resources, to
be managed with one interface, and to transcode across a full range of video, audio and
network standards, means the customer can leverage their investment in equipment and save
on support costs in ways that are both flexible and produce significant returns on investment.

The Polycom Office TM

The Polycom Office is the conferencing and communications vision that drives the integration
of all Polycom video, voice, network, and data products. Polycom Unified Conferencing is a
major advancement in making a feature-rich, seamlessly integrated conferencing environment
a reality.

The Polycom Office provides a proven end-to-end conferencing solution that includes
Polycom Unified Conferencing, voice and video endpoints, and network management and
support. With The Polycom Office, the benefits of interoperability, feature rich conferencing,
and shared resources and management that are provided with Polycom Unified Conferencing
are extended to the entire conferencing network, including voice and video endpoints,
collaboration and network management.

13


The Polycom Office
Conquering Distance Communication
Conferencing Conferencing & Collaboration
Personal Group Large ROOM
Personal Group
Voice Voice Video Video
Voice
SoundPoint® VoiceStationTM Vortex®
iPower
VOIP SoundStation® iPower ExecutiveTM Executive Collection
SoundStation IP
Premier®
SoundStation VTX 1000TM Polycom WebOfficeTM

Video Video
ViaVideoTM
ViewStation®

Application Packages: Health; Legal; Education

Network Infrastructure and Management Solutions

Polycom Global Services

Summary: Polycom Unified Conferencing Benefits
The power to bring together integrated services for voice and video into one platform is
beneficial on many levels. A Polycom Unified Conferencing MGC platform provides
seamless connectivity, management, interoperability, control and a simplified user experience
for the network manager, the conference administrator and the end user.

Binding these network layers, protocols, and applications together under a single, unified
platform has significant benefit. Let’s take another look at the challenges discussed earlier to
see how the MGC provides valuable solutions to those challenges.

Beginning with the network, it becomes clear that the MGC platform solves many issues
related to the network. The MGC provides physical interfaces to both voice and video
circuits. It is extremely important to have a common element when deploying mixed services.
Having a system that provides mixed services natively, within a reliable architecture,
alleviates many problems associated with simply getting the services deployed.

The MGC platform supports all of the standards and protocols associated with voice and
video services. This is important in itself, but the MGC goes a crucial step further. The MGC
solves the issue of mixing conferences that have differing standards and protocols. NO
LONGER are you limited to supporting a least common denominator method of conferencing
services. The MGC translates the various standards and protocols between each endpoint,
allowing each endpoint to participate in a conference session at its highest mode of operation.
This is achieved entirely without manager or end user intervention.

14


The network manager now has a common entry point for monitoring, diagnostics and
management. It is much easier for the manager to have access to and manage one or more
systems, using the robust capabilities of the MGC Manager, ensuring with confidence that all
voice and video services are operational from end to end. The other key benefit to the
manager is that the MGC unified platform is based on the highly reliable MGC architecture,
providing both scalability and redundancy.

The conference administrator also now has a single point of entry for all scheduled or adhoc
conferencing services. This is very advantageous to the administrator when trying to
coordinate not only voice and video services, but also peoples’ schedules.

The end user now has a single point of entry for conferences and a common user experience
for voice and video services. The end user is able to focus on the issues at hand without
having to worry about using the technology.

The Polycom MGC eliminates issues related to differing levels of access control and
security. As described earlier, the MGC provides common entry points into the service, based
on a user, or group policies and permissions. The network administrator sets these policies
and permissions one time and, from that point on, the user’s experience remains the same.

The organization’s typical usage scenarios and requirements are now greatly expanded due to
the ability to mix and integrate both on-demand and scheduled voice and video services.

The organization’s goals for technical support, effective management of network, technology,
and application resources are now all synchronized through a core set of capabilities based on
the MGC Unified Conferencing Bridge.

All of these benefits result in a lower cost of ownership and operation, thereby providing cost-
effective services to the organization.

Vortex are registered trademarks and The Polycom Office, Polycom WebOffice, Polycom VoicePlus, Via Video,
iPower and SoundStation VTX 1000 are trademarks of Polycom, Inc. in the U.S. and various countries. All other
trademarks are the property of their respective owners. Specifications are subject to change without notice.

15

Unified Conferencing: What is it

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