Connecting the World

Multimedia ConferencingSystem (MCS)

Technology trends today indicate that the world of communications is converging.

Voice, video and data are all merging into one carrier base : Internet Protocol (IP).

Whoever manages to make the above a reality, with the ability to use current infrastructure and generic PCs, will become the world leader in multimedia communications.

Technology Trends

1st Generation : POINT TO POINT

Legacy Systems

Proprietary ISDN

2nd Generation : POINT TO MULTIPOINT

Current Systems

MCUISDN

ISDN

ISDN

ISDN

ISDN / MCU Based Systems

• The above mentioned technologies are loosing money and market share.

• They have realized their mistakes and are now working hard toward IP based solutions.

MCU based ISDN systems, running proprietary protocols

MULTIPOINT TO MULTIPOINT to multipoint..

Internet or IP Network

Video PABX of the future, where every office can be connected to each other via Intranets or the Internet. Cost of communications: RM 0.00

Current System

Requires dedicated ISDN lines to the desktop and Boardrooms, which mean additional infrastructure.

Expensive MCU (Hub) is needed for mixing and re-transmitting.

Expensive WAN link is proprietary and dedicated to video conferencing only.

Expensive WAN bandwidth increases proportionally with each new user.

Use your existing LAN infrastructure. Zero additional infrastructure cost.

Do not require an expensive MCU. It uses a server.

IP-based and merges with your existing corporate WAN link or uses the Internet.

WAN bandwidth needs remain constant, irrespective of the number of users.

Research Areas ofFuture System

Problems of Today

MCS Version 5.0 presents a MULTIPOINT-TO-MULTIPOINT system that has unique features overcome the disadvantages of current systems:

Allows multipoint desktop and boardroom conferencing using your existing LAN infrastructure, without effecting your current applications.

No expensive MCU is required.

MCS uses the non-proprietary IP protocol and runs over your existing network lines and even over the Internet.

The required WAN or Internet bandwidth remains constant, no matter how many sites join the conference.

Multimedia ConferencingDistributed Network

Entity Architecture RSW Control

Criteria

H.323 Client Video Module Audio ModuleControl Module ChatMLIC Server ClientDocument Conferencing Usage Monitoring

CIF Format

LINUX Codec DynamicCodec

Adjuster

LINUX CodecIntegratedEcho Cancellation

Controls For LINUX

Client Server

Web basedChat

IM Client Integration

Server to

Server

Auto Bandwidth

Shaper

Inter-MLICCompression

Inter- MLICRouting

IPv6Server

NATedServer

Server to

Server

Client Server

Reliable Multicast

Server to

Server

Cell Phone (3G Technology)

Tablet PCPDA Client(Wireless)

UnidirectionalLink Support

POTSIntegration

(VOIP)

Web BasedIPv6 Auto FirewallConfiguration

Web Admin

FundamentalTechnology

Core

Development

Future Development

Current Development

1. Uses the Real-time Switching Control Criteria to optimize bandwidth for multimedia conferencing.

2. Uses the Distributed Network Entity Architecture to provide the speed and processing power for high end real-time multimedia applications.

MCS Unique Features

• Allow 2 active participants • Integrated chat and document

conferencing • Drop joined user from conference• Receive multiple invitation to

conference• Change password• Invite during conference

MCS Features

Change Password

Invite during conference

Audio Features :

• Buffer volume control• Capture volume control• Enable / Disable audio transmission

Buffer Volume Control

Mute volume

Adjust volume

Volume figure will be shown

Capture volume Control

Mute volume (stop sending)

Adjust volume

Volume figure will be shown

Enable / Disable Audio

Enabled

Disabled

Video Features :• Allow changing of video frame rate • Auto video windows size changing• Multiple resolution• Multiple video windows• Allow changing of video source• Allow changing of video properties• Video windows alignments• Change Camera On the Fly

How to change settings :

Changing video frame rate

Auto video windows size changing

How to change settings :

Multiple resolution

• 4 different resolutions

320 x 240 pixels320 x 240 pixels 176 x 144 176 x 144 pixelspixels

160 x 120 160 x 120 pixelspixels

128 x 96 128 x 96 pixelspixels

Scenario : 1 Chairman & 2 Active participantPic : 320 x 240

Scenario where there are 4 windows with 320 x 240 windows size.

Multiple video windows :

• 1 Chairman , 1 Active Participant– Chairman : 2 windows– Active participant : 2 windows– Join participants : 3 windows

• 1 Chairman , 2 Active Participants– Chairman : 3 windows– Active participants : 3 windows– Join participants : 4 windows

Changing video source

• Function available for capture card

Video windows alignments• Types of alignments

– Left

– Right

– Top

– Bottom

– Boardroom

– DC (Document Conferencing)

Change Camera On-The-Fly

MCS Compatible to H.323 Standard

MCS ver5 able to work well with H.323. Below screen shot is one of the example on how MCS has been integrated with H.323.Video with the name “din’ is using MCS to transmit meanwhile name”sandra lim” using netmeeting. The screen shot is from MCS point of view.

MCS Chat Screen

Chat tool integrated with MCS ver5. Above is the sample of screen shot of chat window.

WAN

Ethernet

San Francisco

Ethernet

Kuala Lumpur

Ethernet

Helsinki

MLIC enables multiple LANs interconnected by WANs to join in a conference.

MLIC Entity

GAMSA HAMNIDA

Sivavenayakam VelayuthamNetwork Research GroupUniversiti Sains Malaysia

siva@nrg.cs.usm.my